726420566 has 16 divisors (see below), whose sum is σ = 1107482544. Its totient is φ = 357275424.

The previous prime is 726420553. The next prime is 726420571. The reversal of 726420566 is 665024627.

It is a congruent number.

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, 100076 + ... + 107088.

It is an arithmetic number, because the mean of its divisors is an integer number (69217659).

Almost surely, 2^726420566 is an apocalyptic number.

726420566 is a deficient number, since it is larger than the sum of its proper divisors (381061978).

726420566 is a wasteful number, since it uses less digits than its factorization.

726420566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7855.

The product of its (nonzero) digits is 120960, while the sum is 38.

The square root of 726420566 is about 26952.1903748100. The cubic root of 726420566 is about 898.9372500903.

The spelling of 726420566 in words is "seven hundred twenty-six million, four hundred twenty thousand, five hundred sixty-six".