672764634 has 24 divisors (see below), whose sum is σ = 1475222112. Its totient is φ = 221552520.

The previous prime is 672764623. The next prime is 672764639. The reversal of 672764634 is 436467276.

672764634 is a `hidden beast` number, since 6 + 7 + 2 + 7 + 6 + 4 + 634 = 666.

It is a super-2 number, since 2×672764634² = 905224505522307912, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 672764634.

It is not an unprimeable number, because it can be changed into a prime (672764639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 223662 + ... + 226649.

It is an arithmetic number, because the mean of its divisors is an integer number (61467588).

Almost surely, 2^672764634 is an apocalyptic number.

672764634 is an abundant number, since it is smaller than the sum of its proper divisors (802457478).

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

672764634 is a wasteful number, since it uses less digits than its factorization.

672764634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450402 (or 450399 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 45.

The square root of 672764634 is about 25937.7067991756. The cubic root of 672764634 is about 876.2359172559.

The spelling of 672764634 in words is "six hundred seventy-two million, seven hundred sixty-four thousand, six hundred thirty-four".