722621842 has 16 divisors (see below), whose sum is σ = 1119555072. Its totient is φ = 349450560.

The previous prime is 722621827. The next prime is 722621857. The reversal of 722621842 is 248126227.

It is an interprime number because it is at equal distance from previous prime (722621827) and next prime (722621857).

It is a junction number, because it is equal to n+sod(n) for n = 722621798 and 722621807.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 197643 + ... + 201265.

It is an arithmetic number, because the mean of its divisors is an integer number (69972192).

Almost surely, 2^722621842 is an apocalyptic number.

722621842 is a deficient number, since it is larger than the sum of its proper divisors (396933230).

722621842 is a wasteful number, since it uses less digits than its factorization.

722621842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6873.

The product of its digits is 21504, while the sum is 34.

The square root of 722621842 is about 26881.6264760896. The cubic root of 722621842 is about 897.3675513665.

The spelling of 722621842 in words is "seven hundred twenty-two million, six hundred twenty-one thousand, eight hundred forty-two".