722673880 has 64 divisors (see below), whose sum is σ = 1667952000. Its totient is φ = 281670144.

The previous prime is 722673877. The next prime is 722673907. The reversal of 722673880 is 88376227.

It is a congruent number.

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, 505006 + ... + 506434.

It is an arithmetic number, because the mean of its divisors is an integer number (26061750).

Almost surely, 2^722673880 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 722673880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (833976000).

722673880 is an abundant number, since it is smaller than the sum of its proper divisors (945278120).

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

722673880 is a wasteful number, since it uses less digits than its factorization.

722673880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1756 (or 1752 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 43.

The square root of 722673880 is about 26882.5943688477. The cubic root of 722673880 is about 897.3890914903.

The spelling of 722673880 in words is "seven hundred twenty-two million, six hundred seventy-three thousand, eight hundred eighty".