672045636 has 48 divisors (see below), whose sum is σ = 1599796800. Its totient is φ = 219512832.

The previous prime is 672045631. The next prime is 672045643. The reversal of 672045636 is 636540276.

It is a junction number, because it is equal to n+sod(n) for n = 672045594 and 672045603.

It is not an unprimeable number, because it can be changed into a prime (672045631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 248580 + ... + 251268.

It is an arithmetic number, because the mean of its divisors is an integer number (33329100).

Almost surely, 2^672045636 is an apocalyptic number.

It is an amenable number.

672045636 is an abundant number, since it is smaller than the sum of its proper divisors (927751164).

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

672045636 is a wasteful number, since it uses less digits than its factorization.

672045636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3108 (or 3106 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 39.

The square root of 672045636 is about 25923.8430021477. The cubic root of 672045636 is about 875.9236552803.

The spelling of 672045636 in words is "six hundred seventy-two million, forty-five thousand, six hundred thirty-six".