720477696 has 80 divisors (see below), whose sum is σ = 1981444608. Its totient is φ = 232396800.

The previous prime is 720477673. The next prime is 720477721. The reversal of 720477696 is 696774027.

It is a happy number.

It is a super-2 number, since 2×720477696² = 1038176220866936832, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40051 + ... + 55181.

Almost surely, 2^720477696 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 720477696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (990722304).

720477696 is an abundant number, since it is smaller than the sum of its proper divisors (1260966912).

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

720477696 is a wasteful number, since it uses less digits than its factorization.

720477696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15183 (or 15167 counting only the distinct ones).

The product of its (nonzero) digits is 889056, while the sum is 48.

The square root of 720477696 is about 26841.7155934564. The cubic root of 720477696 is about 896.4791230020.

The spelling of 720477696 in words is "seven hundred twenty million, four hundred seventy-seven thousand, six hundred ninety-six".