726625969 has 4 divisors (see below), whose sum is σ = 742086144. Its totient is φ = 711165796.

The previous prime is 726625901. The next prime is 726625973. The reversal of 726625969 is 969526627.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 726625969 - 2⁷ = 726625841 is a prime.

It is a super-2 number, since 2×726625969² = 1055970597650377922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (726625069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7730017 + ... + 7730110.

It is an arithmetic number, because the mean of its divisors is an integer number (185521536).

Almost surely, 2^726625969 is an apocalyptic number.

It is an amenable number.

726625969 is a deficient number, since it is larger than the sum of its proper divisors (15460175).

726625969 is a wasteful number, since it uses less digits than its factorization.

726625969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15460174.

The product of its digits is 2449440, while the sum is 52.

The square root of 726625969 is about 26956.0006121086. Note that the first 3 decimals coincide. The cubic root of 726625969 is about 899.0219700702.

The spelling of 726625969 in words is "seven hundred twenty-six million, six hundred twenty-five thousand, nine hundred sixty-nine".