670641356 has 48 divisors (see below), whose sum is σ = 1513693440. Its totient is φ = 252275520.

The previous prime is 670641341. The next prime is 670641397. The reversal of 670641356 is 653146076.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28610 + ... + 46473.

It is an arithmetic number, because the mean of its divisors is an integer number (31535280).

Almost surely, 2^670641356 is an apocalyptic number.

It is an amenable number.

670641356 is an abundant number, since it is smaller than the sum of its proper divisors (843052084).

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

670641356 is a wasteful number, since it uses less digits than its factorization.

670641356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75134 (or 75132 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 670641356 is about 25896.7441196765. The cubic root of 670641356 is about 875.3131313566.

The spelling of 670641356 in words is "six hundred seventy million, six hundred forty-one thousand, three hundred fifty-six".