722424257766 has 48 divisors (see below), whose sum is σ = 1588811597568. Its totient is φ = 237190086000.

The previous prime is 722424257761. The next prime is 722424257813. The reversal of 722424257766 is 667752424227.

722424257766 is a `hidden beast` number, since 7 + 2 + 2 + 4 + 2 + 4 + 2 + 577 + 66 = 666.

It is a super-2 number, since 2×722424257766² (a number of 25 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722424257761) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1074255 + ... + 1612101.

It is an arithmetic number, because the mean of its divisors is an integer number (33100241616).

Almost surely, 2^722424257766 is an apocalyptic number.

722424257766 is an abundant number, since it is smaller than the sum of its proper divisors (866387339802).

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

722424257766 is a wasteful number, since it uses less digits than its factorization.

722424257766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538977 (or 538974 counting only the distinct ones).

The product of its digits is 15805440, while the sum is 54.

The spelling of 722424257766 in words is "seven hundred twenty-two billion, four hundred twenty-four million, two hundred fifty-seven thousand, seven hundred sixty-six".