649713695 has 8 divisors (see below), whose sum is σ = 779823936. Its totient is φ = 519659296.

The previous prime is 649713689. The next prime is 649713719. The reversal of 649713695 is 596317946.

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 649713695 - 2²⁸ = 381278239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 18509 + ... + 40521.

It is an arithmetic number, because the mean of its divisors is an integer number (97477992).

Almost surely, 2^649713695 is an apocalyptic number.

649713695 is a deficient number, since it is larger than the sum of its proper divisors (130110241).

649713695 is a wasteful number, since it uses less digits than its factorization.

649713695 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27921.

The product of its digits is 1224720, while the sum is 50.

The square root of 649713695 is about 25489.4820465226. The cubic root of 649713695 is about 866.1119027720. Note that the first 3 decimals are identical.

The spelling of 649713695 in words is "six hundred forty-nine million, seven hundred thirteen thousand, six hundred ninety-five".