726625668 has 24 divisors (see below), whose sum is σ = 1696223872. Its totient is φ = 242099424.

The previous prime is 726625667. The next prime is 726625681. The reversal of 726625668 is 866526627.

It is a super-2 number, since 2×726625668² = 1055969722792892448, which contains 22 as substring.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (726625667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16821 + ... + 41667.

Almost surely, 2^726625668 is an apocalyptic number.

It is an amenable number.

726625668 is an abundant number, since it is smaller than the sum of its proper divisors (969598204).

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

726625668 is a wasteful number, since it uses less digits than its factorization.

726625668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27291 (or 27289 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 48.

The square root of 726625668 is about 26955.9950289356. The cubic root of 726625668 is about 899.0218459322.

The spelling of 726625668 in words is "seven hundred twenty-six million, six hundred twenty-five thousand, six hundred sixty-eight".