670501440 has 336 divisors, whose sum is σ = 2675412480. Its totient is φ = 150958080.

The previous prime is 670501439. The next prime is 670501441. The reversal of 670501440 is 44105076.

It is an interprime number because it is at equal distance from previous prime (670501439) and next prime (670501441).

It is a tau number, because it is divible by the number of its divisors (336).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670501441) 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, 1592430 + ... + 1592850.

Almost surely, 2^670501440 is an apocalyptic number.

670501440 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 670501440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1337706240).

670501440 is an abundant number, since it is smaller than the sum of its proper divisors (2004911040).

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

670501440 is a wasteful number, since it uses less digits than its factorization.

670501440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530 (or 517 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 670501440 is about 25894.0425580866. The cubic root of 670501440 is about 875.2522548892.

The spelling of 670501440 in words is "six hundred seventy million, five hundred one thousand, four hundred forty".