720965887 has 8 divisors (see below), whose sum is σ = 763459200. Its totient is φ = 678927384.

The previous prime is 720965881. The next prime is 720965911. The reversal of 720965887 is 788569027.

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 720965887 - 2¹¹ = 720963839 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 (720965881) 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, 110437 + ... + 116782.

It is an arithmetic number, because the mean of its divisors is an integer number (95432400).

Almost surely, 2^720965887 is an apocalyptic number.

720965887 is a deficient number, since it is larger than the sum of its proper divisors (42493313).

720965887 is a wasteful number, since it uses less digits than its factorization.

720965887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227405.

The product of its (nonzero) digits is 1693440, while the sum is 52.

The square root of 720965887 is about 26850.8079394271. The cubic root of 720965887 is about 896.6815600928.

The spelling of 720965887 in words is "seven hundred twenty million, nine hundred sixty-five thousand, eight hundred eighty-seven".