667935674 has 16 divisors (see below), whose sum is σ = 1172961216. Its totient is φ = 279276000.

The previous prime is 667935649. The next prime is 667935677. The reversal of 667935674 is 476539766.

It is a super-2 number, since 2×667935674² = 892276129203668552, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (667935677) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 581252 + ... + 582399.

It is an arithmetic number, because the mean of its divisors is an integer number (73310076).

Almost surely, 2^667935674 is an apocalyptic number.

667935674 is a deficient number, since it is larger than the sum of its proper divisors (505025542).

667935674 is a wasteful number, since it uses less digits than its factorization.

667935674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1163701.

The product of its digits is 5715360, while the sum is 53.

The square root of 667935674 is about 25844.4515128489. The cubic root of 667935674 is about 874.1344034167.

The spelling of 667935674 in words is "six hundred sixty-seven million, nine hundred thirty-five thousand, six hundred seventy-four".