722026656 has 96 divisors (see below), whose sum is σ = 2267939520. Its totient is φ = 222158592.

The previous prime is 722026637. The next prime is 722026661. The reversal of 722026656 is 656620227.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 722026656.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20910 + ... + 43373.

It is an arithmetic number, because the mean of its divisors is an integer number (23624370).

Almost surely, 2^722026656 is an apocalyptic number.

It is an amenable number.

722026656 is an abundant number, since it is smaller than the sum of its proper divisors (1545912864).

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

722026656 is a wasteful number, since it uses less digits than its factorization.

722026656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64315 (or 64301 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 722026656 is about 26870.5536973096. The cubic root of 722026656 is about 897.1211120458.

The spelling of 722026656 in words is "seven hundred twenty-two million, twenty-six thousand, six hundred fifty-six".