722561670 has 24 divisors (see below), whose sum is σ = 1878660576. Its totient is φ = 192683088.

The previous prime is 722561669. The next prime is 722561677. The reversal of 722561670 is 76165227.

722561670 is a `hidden beast` number, since 7 + 22 + 561 + 6 + 70 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722561677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4014142 + ... + 4014321.

It is an arithmetic number, because the mean of its divisors is an integer number (78277524).

Almost surely, 2^722561670 is an apocalyptic number.

722561670 is an abundant number, since it is smaller than the sum of its proper divisors (1156098906).

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

722561670 is a wasteful number, since it uses less digits than its factorization.

722561670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8028476 (or 8028473 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 722561670 is about 26880.5072496782. The cubic root of 722561670 is about 897.3426430415.

The spelling of 722561670 in words is "seven hundred twenty-two million, five hundred sixty-one thousand, six hundred seventy".