722474642 has 8 divisors (see below), whose sum is σ = 1089976716. Its totient is φ = 359149072.

The previous prime is 722474603. The next prime is 722474659. The reversal of 722474642 is 246474227.

It can be written as a sum of positive squares in 2 ways, for example, as 704318521 + 18156121 = 26539^2 + 4261^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 722474596 and 722474605.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1043693 + ... + 1044384.

Almost surely, 2^722474642 is an apocalyptic number.

722474642 is a deficient number, since it is larger than the sum of its proper divisors (367502074).

722474642 is a wasteful number, since it uses less digits than its factorization.

722474642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2088252.

The product of its digits is 150528, while the sum is 38.

The square root of 722474642 is about 26878.8884070752. Note that the first 3 decimals coincide. The cubic root of 722474642 is about 897.3066151727.

The spelling of 722474642 in words is "seven hundred twenty-two million, four hundred seventy-four thousand, six hundred forty-two".