670458240 has 384 divisors, whose sum is σ = 2526189120. Its totient is φ = 163184640.

The previous prime is 670458233. The next prime is 670458247. The reversal of 670458240 is 42854076.

670458240 is a `hidden beast` number, since 6 + 70 + 4 + 582 + 4 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (670458233) and next prime (670458247).

It is a tau number, because it is divible by the number of its divisors (384).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 670458195 and 670458204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670458247) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4014637 + ... + 4014803.

Almost surely, 2^670458240 is an apocalyptic number.

670458240 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 670458240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1263094560).

670458240 is an abundant number, since it is smaller than the sum of its proper divisors (1855730880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

670458240 is a wasteful number, since it uses less digits than its factorization.

670458240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250 (or 235 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 670458240 is about 25893.2083759429. The cubic root of 670458240 is about 875.2334571620.

The spelling of 670458240 in words is "six hundred seventy million, four hundred fifty-eight thousand, two hundred forty".