720877132 has 12 divisors (see below), whose sum is σ = 1316384496. Its totient is φ = 344767280.

The previous prime is 720877093. The next prime is 720877139. The reversal of 720877132 is 231778027.

It is a junction number, because it is equal to n+sod(n) for n = 720877091 and 720877100.

It is not an unprimeable number, because it can be changed into a prime (720877139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3917719 + ... + 3917902.

It is an arithmetic number, because the mean of its divisors is an integer number (109698708).

Almost surely, 2^720877132 is an apocalyptic number.

It is an amenable number.

720877132 is a deficient number, since it is larger than the sum of its proper divisors (595507364).

720877132 is a wasteful number, since it uses less digits than its factorization.

720877132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7835648 (or 7835646 counting only the distinct ones).

The product of its (nonzero) digits is 32928, while the sum is 37.

The square root of 720877132 is about 26849.1551449948. The cubic root of 720877132 is about 896.6447630500.

The spelling of 720877132 in words is "seven hundred twenty million, eight hundred seventy-seven thousand, one hundred thirty-two".