722634740 has 12 divisors (see below), whose sum is σ = 1517532996. Its totient is φ = 289053888.

The previous prime is 722634739. The next prime is 722634761. The reversal of 722634740 is 47436227.

722634740 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 162460516 + 560174224 = 12746^2 + 23668^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 722634740.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18065849 + ... + 18065888.

It is an arithmetic number, because the mean of its divisors is an integer number (126461083).

Almost surely, 2^722634740 is an apocalyptic number.

It is an amenable number.

722634740 is an abundant number, since it is smaller than the sum of its proper divisors (794898256).

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

722634740 is a wasteful number, since it uses less digits than its factorization.

722634740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36131746 (or 36131744 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 35.

The square root of 722634740 is about 26881.8663786576. The cubic root of 722634740 is about 897.3728903406.

The spelling of 722634740 in words is "seven hundred twenty-two million, six hundred thirty-four thousand, seven hundred forty".