726979634 has 12 divisors (see below), whose sum is σ = 1150884414. Its totient is φ = 344358432.

The previous prime is 726979621. The next prime is 726979637. The reversal of 726979634 is 436979627.

It can be written as a sum of positive squares in only one way, i.e., 670654609 + 56325025 = 25897^2 + 7505^2 .

It is a Smith number, since the sum of its digits (53) 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 (726979637) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 502727 + ... + 504170.

Almost surely, 2^726979634 is an apocalyptic number.

726979634 is a deficient number, since it is larger than the sum of its proper divisors (423904780).

726979634 is a wasteful number, since it uses less digits than its factorization.

726979634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1006937 (or 1006918 counting only the distinct ones).

The product of its digits is 3429216, while the sum is 53.

The square root of 726979634 is about 26962.5598562154. The cubic root of 726979634 is about 899.1678044003.

The spelling of 726979634 in words is "seven hundred twenty-six million, nine hundred seventy-nine thousand, six hundred thirty-four".