649992267 has 12 divisors (see below), whose sum is σ = 948174864. Its totient is φ = 429037200.

The previous prime is 649992251. The next prime is 649992269. The reversal of 649992267 is 762299946.

649992267 is a `hidden beast` number, since 6 + 499 + 92 + 2 + 67 = 666.

649992267 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 649992267 - 2⁴ = 649992251 is a prime.

It is not an unprimeable number, because it can be changed into a prime (649992269) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 356623 + ... + 358440.

It is an arithmetic number, because the mean of its divisors is an integer number (79014572).

Almost surely, 2^649992267 is an apocalyptic number.

649992267 is a deficient number, since it is larger than the sum of its proper divisors (298182597).

649992267 is a wasteful number, since it uses less digits than its factorization.

649992267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 715170 (or 715167 counting only the distinct ones).

The product of its digits is 2939328, while the sum is 54.

The square root of 649992267 is about 25494.9459109056. The cubic root of 649992267 is about 866.2356701339.

The spelling of 649992267 in words is "six hundred forty-nine million, nine hundred ninety-two thousand, two hundred sixty-seven".