716765649 has 16 divisors (see below), whose sum is σ = 983310720. Its totient is φ = 464135040.

The previous prime is 716765641. The next prime is 716765681. The reversal of 716765649 is 946567617.

It is a happy number.

It is not a de Polignac number, because 716765649 - 2³ = 716765641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (716765641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15444 + ... + 40890.

It is an arithmetic number, because the mean of its divisors is an integer number (61456920).

Almost surely, 2^716765649 is an apocalyptic number.

It is an amenable number.

716765649 is a deficient number, since it is larger than the sum of its proper divisors (266545071).

716765649 is a wasteful number, since it uses less digits than its factorization.

716765649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25720.

The product of its digits is 1905120, while the sum is 51.

The square root of 716765649 is about 26772.4793211238. The cubic root of 716765649 is about 894.9368572746.

The spelling of 716765649 in words is "seven hundred sixteen million, seven hundred sixty-five thousand, six hundred forty-nine".