726625831 has 2 divisors, whose sum is σ = 726625832. Its totient is φ = 726625830.

The previous prime is 726625811. The next prime is 726625841. The reversal of 726625831 is 138526627.

It is a strong prime.

It is an emirp because it is prime and its reverse (138526627) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 726625831 - 2⁷ = 726625703 is a prime.

It is a super-2 number, since 2×726625831² = 1055970196552881122, which contains 22 as substring.

It is equal to p_37559047 and since 726625831 and 37559047 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (726625811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 363312915 + 363312916.

It is an arithmetic number, because the mean of its divisors is an integer number (363312916).

Almost surely, 2^726625831 is an apocalyptic number.

726625831 is a deficient number, since it is larger than the sum of its proper divisors (1).

726625831 is an equidigital number, since it uses as much as digits as its factorization.

726625831 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 40.

The square root of 726625831 is about 26955.9980523816. The cubic root of 726625831 is about 899.0219131565.

The spelling of 726625831 in words is "seven hundred twenty-six million, six hundred twenty-five thousand, eight hundred thirty-one".