722508630 has 96 divisors (see below), whose sum is σ = 1887494400. Its totient is φ = 176506560.

The previous prime is 722508629. The next prime is 722508659. The reversal of 722508630 is 36805227.

It is a junction number, because it is equal to n+sod(n) for n = 722508591 and 722508600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 547111 + ... + 548429.

It is an arithmetic number, because the mean of its divisors is an integer number (19661400).

Almost surely, 2^722508630 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 722508630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (943747200).

722508630 is an abundant number, since it is smaller than the sum of its proper divisors (1164985770).

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

722508630 is a wasteful number, since it uses less digits than its factorization.

722508630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1410 (or 1379 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 722508630 is about 26879.5206430472. The cubic root of 722508630 is about 897.3206858760.

The spelling of 722508630 in words is "seven hundred twenty-two million, five hundred eight thousand, six hundred thirty".