722555616 has 48 divisors (see below), whose sum is σ = 1915513488. Its totient is φ = 238464000.

The previous prime is 722555611. The next prime is 722555621. The reversal of 722555616 is 616555227.

It is an interprime number because it is at equal distance from previous prime (722555611) and next prime (722555621).

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722555611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27565 + ... + 46956.

It is an arithmetic number, because the mean of its divisors is an integer number (39906531).

Almost surely, 2^722555616 is an apocalyptic number.

It is an amenable number.

722555616 is an abundant number, since it is smaller than the sum of its proper divisors (1192957872).

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

722555616 is a wasteful number, since it uses less digits than its factorization.

722555616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74635 (or 74627 counting only the distinct ones).

The product of its digits is 126000, while the sum is 39.

The square root of 722555616 is about 26880.3946399602. The cubic root of 722555616 is about 897.3401368990.

The spelling of 722555616 in words is "seven hundred twenty-two million, five hundred fifty-five thousand, six hundred sixteen".