726658065 has 24 divisors (see below), whose sum is σ = 1439475648. Its totient is φ = 332186400.

The previous prime is 726658061. The next prime is 726658087. The reversal of 726658065 is 560856627.

726658065 is a `hidden beast` number, since 7 + 2 + 6 + 6 + 580 + 65 = 666.

It is not a de Polignac number, because 726658065 - 2² = 726658061 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 726658065.

It is not an unprimeable number, because it can be changed into a prime (726658061) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1153111 + ... + 1153740.

It is an arithmetic number, because the mean of its divisors is an integer number (59978152).

Almost surely, 2^726658065 is an apocalyptic number.

It is an amenable number.

726658065 is a deficient number, since it is larger than the sum of its proper divisors (712817583).

726658065 is a wasteful number, since it uses less digits than its factorization.

726658065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2306869 (or 2306866 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The square root of 726658065 is about 26956.5959460760. The cubic root of 726658065 is about 899.0352068594.

The spelling of 726658065 in words is "seven hundred twenty-six million, six hundred fifty-eight thousand, sixty-five".