726615304 has 8 divisors (see below), whose sum is σ = 1362403710. Its totient is φ = 363307648.

The previous prime is 726615301. The next prime is 726615317. The reversal of 726615304 is 403516627.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 571114404 + 155500900 = 23898^2 + 12470^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 726615304.

It is not an unprimeable number, because it can be changed into a prime (726615301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45413449 + ... + 45413464.

Almost surely, 2^726615304 is an apocalyptic number.

It is an amenable number.

726615304 is a deficient number, since it is larger than the sum of its proper divisors (635788406).

726615304 is a wasteful number, since it uses less digits than its factorization.

726615304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90826919 (or 90826915 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 726615304 is about 26955.8027890100. The cubic root of 726615304 is about 899.0175716054.

The spelling of 726615304 in words is "seven hundred twenty-six million, six hundred fifteen thousand, three hundred four".