726661008 has 60 divisors (see below), whose sum is σ = 2035859280. Its totient is φ = 241956288.

The previous prime is 726661007. The next prime is 726661021. The reversal of 726661008 is 800166627.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (726661007) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 165303 + ... + 169641.

It is an arithmetic number, because the mean of its divisors is an integer number (33930988).

Almost surely, 2^726661008 is an apocalyptic number.

It is an amenable number.

726661008 is an abundant number, since it is smaller than the sum of its proper divisors (1309198272).

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

726661008 is a wasteful number, since it uses less digits than its factorization.

726661008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5516 (or 5507 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 726661008 is about 26956.6505337737. The cubic root of 726661008 is about 899.0364205697.

The spelling of 726661008 in words is "seven hundred twenty-six million, six hundred sixty-one thousand, eight".