670667340 has 384 divisors, whose sum is σ = 2438553600. Its totient is φ = 134184960.

The previous prime is 670667329. The next prime is 670667341. The reversal of 670667340 is 43766076.

It is not an unprimeable number, because it can be changed into a prime (670667341) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 8489421 + ... + 8489499.

It is an arithmetic number, because the mean of its divisors is an integer number (6350400).

Almost surely, 2^670667340 is an apocalyptic number.

670667340 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 670667340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1219276800).

670667340 is an abundant number, since it is smaller than the sum of its proper divisors (1767886260).

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

670667340 is a wasteful number, since it uses less digits than its factorization.

670667340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185 (or 183 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 39.

The square root of 670667340 is about 25897.2457995054. The cubic root of 670667340 is about 875.3244358800.

The spelling of 670667340 in words is "six hundred seventy million, six hundred sixty-seven thousand, three hundred forty".