726245644 has 24 divisors (see below), whose sum is σ = 1371087648. Its totient is φ = 335312640.

The previous prime is 726245633. The next prime is 726245713. The reversal of 726245644 is 446542627.

It is a junction number, because it is equal to n+sod(n) for n = 726245597 and 726245606.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97152 + ... + 104359.

It is an arithmetic number, because the mean of its divisors is an integer number (57128652).

Almost surely, 2^726245644 is an apocalyptic number.

It is an amenable number.

726245644 is a deficient number, since it is larger than the sum of its proper divisors (644842004).

726245644 is a wasteful number, since it uses less digits than its factorization.

726245644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201585 (or 201583 counting only the distinct ones).

The product of its digits is 322560, while the sum is 40.

The square root of 726245644 is about 26948.9451370550. The cubic root of 726245644 is about 898.8650896311.

The spelling of 726245644 in words is "seven hundred twenty-six million, two hundred forty-five thousand, six hundred forty-four".