764008649487 has 24 divisors (see below), whose sum is σ = 1153594825344. Its totient is φ = 486328493904.

The previous prime is 764008649479. The next prime is 764008649519. The reversal of 764008649487 is 784946800467.

764008649487 is a `hidden beast` number, since 7 + 6 + 400 + 8 + 64 + 94 + 87 = 666.

It is not a de Polignac number, because 764008649487 - 2³ = 764008649479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (764008649687) 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, 3161313 + ... + 3394394.

It is an arithmetic number, because the mean of its divisors is an integer number (48066451056).

Almost surely, 2^764008649487 is an apocalyptic number.

764008649487 is a deficient number, since it is larger than the sum of its proper divisors (389586175857).

764008649487 is a wasteful number, since it uses less digits than its factorization.

764008649487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6556299 (or 6556296 counting only the distinct ones).

The product of its (nonzero) digits is 65028096, while the sum is 63.

The spelling of 764008649487 in words is "seven hundred sixty-four billion, eight million, six hundred forty-nine thousand, four hundred eighty-seven".