722566806 has 16 divisors (see below), whose sum is σ = 1556297904. Its totient is φ = 222328224.

The previous prime is 722566799. The next prime is 722566829. The reversal of 722566806 is 608665227.

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, 4631761 + ... + 4631916.

It is an arithmetic number, because the mean of its divisors is an integer number (97268619).

Almost surely, 2^722566806 is an apocalyptic number.

722566806 is an abundant number, since it is smaller than the sum of its proper divisors (833731098).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

722566806 is a wasteful number, since it uses less digits than its factorization.

722566806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9263695.

The product of its (nonzero) digits is 241920, while the sum is 42.

The square root of 722566806 is about 26880.6027834199. The cubic root of 722566806 is about 897.3447691534.

The spelling of 722566806 in words is "seven hundred twenty-two million, five hundred sixty-six thousand, eight hundred six".