720908677 has 8 divisors (see below), whose sum is σ = 732255552. Its totient is φ = 709579200.

The previous prime is 720908623. The next prime is 720908687. The reversal of 720908677 is 776809027.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 720908677 - 2²³ = 712520069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720908687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97677 + ... + 104797.

It is an arithmetic number, because the mean of its divisors is an integer number (91531944).

Almost surely, 2^720908677 is an apocalyptic number.

It is an amenable number.

720908677 is a deficient number, since it is larger than the sum of its proper divisors (11346875).

720908677 is a wasteful number, since it uses less digits than its factorization.

720908677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8699.

The product of its (nonzero) digits is 296352, while the sum is 46.

The square root of 720908677 is about 26849.7425872205. The cubic root of 720908677 is about 896.6578416757.

The spelling of 720908677 in words is "seven hundred twenty million, nine hundred eight thousand, six hundred seventy-seven".