720402727 has 24 divisors (see below), whose sum is σ = 878855040. Its totient is φ = 583896960.

The previous prime is 720402679. The next prime is 720402731. The reversal of 720402727 is 727204027.

It is a de Polignac number, because none of the positive numbers 2^k-720402727 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 (720402737) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 54438 + ... + 66364.

It is an arithmetic number, because the mean of its divisors is an integer number (36618960).

Almost surely, 2^720402727 is an apocalyptic number.

720402727 is a deficient number, since it is larger than the sum of its proper divisors (158452313).

720402727 is a wasteful number, since it uses less digits than its factorization.

720402727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11991 (or 11974 counting only the distinct ones).

The product of its (nonzero) digits is 10976, while the sum is 31.

The square root of 720402727 is about 26840.3190554807. The cubic root of 720402727 is about 896.4480276722.

The spelling of 720402727 in words is "seven hundred twenty million, four hundred two thousand, seven hundred twenty-seven".