6464903691 has 16 divisors (see below), whose sum is σ = 9078474240. Its totient is φ = 4080880800.

The previous prime is 6464903639. The next prime is 6464903693. The reversal of 6464903691 is 1963094646.

It is not a de Polignac number, because 6464903691 - 2⁷ = 6464903563 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6464903691.

It is not an unprimeable number, because it can be changed into a prime (6464903693) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78526 + ... + 138188.

It is an arithmetic number, because the mean of its divisors is an integer number (567404640).

Almost surely, 2^6464903691 is an apocalyptic number.

6464903691 is a deficient number, since it is larger than the sum of its proper divisors (2613570549).

6464903691 is a wasteful number, since it uses less digits than its factorization.

6464903691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61586.

The product of its (nonzero) digits is 839808, while the sum is 48.

The square root of 6464903691 is about 80404.6248110144. The cubic root of 6464903691 is about 1862.8906080199.

The spelling of 6464903691 in words is "six billion, four hundred sixty-four million, nine hundred three thousand, six hundred ninety-one".