6464903687 has 16 divisors (see below), whose sum is σ = 7426805760. Its totient is φ = 5570056800.

The previous prime is 6464903639. The next prime is 6464903693. The reversal of 6464903687 is 7863094646.

It is not a de Polignac number, because 6464903687 - 2²⁸ = 6196468231 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6464908687) 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, 89639 + ... + 144792.

It is an arithmetic number, because the mean of its divisors is an integer number (464175360).

Almost surely, 2^6464903687 is an apocalyptic number.

6464903687 is a deficient number, since it is larger than the sum of its proper divisors (961902073).

6464903687 is a wasteful number, since it uses less digits than its factorization.

6464903687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234574.

The product of its (nonzero) digits is 5225472, while the sum is 53.

The square root of 6464903687 is about 80404.6247861403. The cubic root of 6464903687 is about 1862.8906076357.

The spelling of 6464903687 in words is "six billion, four hundred sixty-four million, nine hundred three thousand, six hundred eighty-seven".