722955648 has 64 divisors (see below), whose sum is σ = 1923430320. Its totient is φ = 240599040.

The previous prime is 722955613. The next prime is 722955671. The reversal of 722955648 is 846559227.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 722955597 and 722955606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 337236 + ... + 339372.

Almost surely, 2^722955648 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 722955648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (961715160).

722955648 is an abundant number, since it is smaller than the sum of its proper divisors (1200474672).

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

722955648 is a wasteful number, since it uses less digits than its factorization.

722955648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3035 (or 3023 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 48.

The square root of 722955648 is about 26887.8345725348. The cubic root of 722955648 is about 897.5057059509.

The spelling of 722955648 in words is "seven hundred twenty-two million, nine hundred fifty-five thousand, six hundred forty-eight".