722491704 has 256 divisors, whose sum is σ = 2397081600. Its totient is φ = 199065600.

The previous prime is 722491699. The next prime is 722491717. The reversal of 722491704 is 407194227.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1251864 + ... + 1252440.

It is an arithmetic number, because the mean of its divisors is an integer number (9363600).

Almost surely, 2^722491704 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 722491704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1198540800).

722491704 is an abundant number, since it is smaller than the sum of its proper divisors (1674589896).

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

722491704 is a wasteful number, since it uses less digits than its factorization.

722491704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651 (or 641 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 722491704 is about 26879.2057918384. The cubic root of 722491704 is about 897.3136787309.

The spelling of 722491704 in words is "seven hundred twenty-two million, four hundred ninety-one thousand, seven hundred four".