672513312 has 24 divisors (see below), whose sum is σ = 1765347696. Its totient is φ = 224171072.

The previous prime is 672513311. The next prime is 672513367. The reversal of 672513312 is 213315276.

It is a tau number, because it is divible by the number of its divisors (24).

It is a self number, because there is not a number n which added to its sum of digits gives 672513312.

It is not an unprimeable number, because it can be changed into a prime (672513311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3502578 + ... + 3502769.

It is an arithmetic number, because the mean of its divisors is an integer number (73556154).

Almost surely, 2^672513312 is an apocalyptic number.

It is an amenable number.

672513312 is an abundant number, since it is smaller than the sum of its proper divisors (1092834384).

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

672513312 is a wasteful number, since it uses less digits than its factorization.

672513312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7005360 (or 7005352 counting only the distinct ones).

The product of its digits is 7560, while the sum is 30.

The square root of 672513312 is about 25932.8616238162. The cubic root of 672513312 is about 876.1267930146.

Adding to 672513312 its reverse (213315276), we get a palindrome (885828588).

The spelling of 672513312 in words is "six hundred seventy-two million, five hundred thirteen thousand, three hundred twelve".