672523436 has 24 divisors (see below), whose sum is σ = 1282726704. Its totient is φ = 306653760.

The previous prime is 672523429. The next prime is 672523441. The reversal of 672523436 is 634325276.

It is a happy number.

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 672523436.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 73595 + ... + 82226.

It is an arithmetic number, because the mean of its divisors is an integer number (53446946).

Almost surely, 2^672523436 is an apocalyptic number.

It is an amenable number.

672523436 is a deficient number, since it is larger than the sum of its proper divisors (610203268).

672523436 is a wasteful number, since it uses less digits than its factorization.

672523436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155921 (or 155919 counting only the distinct ones).

The product of its digits is 181440, while the sum is 38.

The square root of 672523436 is about 25933.0568194341. The cubic root of 672523436 is about 876.1311893901.

The spelling of 672523436 in words is "six hundred seventy-two million, five hundred twenty-three thousand, four hundred thirty-six".