667804434 has 16 divisors (see below), whose sum is σ = 1457028000. Its totient is φ = 202364960.

The previous prime is 667804427. The next prime is 667804447. The reversal of 667804434 is 434408766.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5059059 + ... + 5059190.

It is an arithmetic number, because the mean of its divisors is an integer number (91064250).

Almost surely, 2^667804434 is an apocalyptic number.

667804434 is an abundant number, since it is smaller than the sum of its proper divisors (789223566).

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

667804434 is a wasteful number, since it uses less digits than its factorization.

667804434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10118265.

The product of its (nonzero) digits is 387072, while the sum is 42.

The square root of 667804434 is about 25841.9123518365. The cubic root of 667804434 is about 874.0771479463.

The spelling of 667804434 in words is "six hundred sixty-seven million, eight hundred four thousand, four hundred thirty-four".