670886965 has 16 divisors (see below), whose sum is σ = 949754880. Its totient is φ = 445196160.

The previous prime is 670886947. The next prime is 670886969. The reversal of 670886965 is 569688076.

It is a happy number.

It is not a de Polignac number, because 670886965 - 2⁵ = 670886933 is a prime.

It is a super-2 number, since 2×670886965² = 900178639613822450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670886969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 308080 + ... + 310249.

It is an arithmetic number, because the mean of its divisors is an integer number (59359680).

Almost surely, 2^670886965 is an apocalyptic number.

It is an amenable number.

670886965 is a deficient number, since it is larger than the sum of its proper divisors (278867915).

670886965 is a wasteful number, since it uses less digits than its factorization.

670886965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 618372.

The product of its (nonzero) digits is 4354560, while the sum is 55.

The square root of 670886965 is about 25901.4857681948. The cubic root of 670886965 is about 875.4199736312.

The spelling of 670886965 in words is "six hundred seventy million, eight hundred eighty-six thousand, nine hundred sixty-five".