670676321 has 16 divisors (see below), whose sum is σ = 782421120. Its totient is φ = 563038080.

The previous prime is 670676309. The next prime is 670676327. The reversal of 670676321 is 123676076.

It is a cyclic number.

It is not a de Polignac number, because 670676321 - 2¹⁸ = 670414177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (670676327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61631 + ... + 71691.

It is an arithmetic number, because the mean of its divisors is an integer number (48901320).

Almost surely, 2^670676321 is an apocalyptic number.

It is an amenable number.

670676321 is a deficient number, since it is larger than the sum of its proper divisors (111744799).

670676321 is a wasteful number, since it uses less digits than its factorization.

670676321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10264.

The product of its (nonzero) digits is 63504, while the sum is 38.

The square root of 670676321 is about 25897.4191957423. The cubic root of 670676321 is about 875.3283430598.

The spelling of 670676321 in words is "six hundred seventy million, six hundred seventy-six thousand, three hundred twenty-one".