12649767 has 16 divisors (see below), whose sum is σ = 18751488. Its totient is φ = 7532640.

The previous prime is 12649757. The next prime is 12649789. The reversal of 12649767 is 76794621.

It is not a de Polignac number, because 12649767 - 2⁷ = 12649639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12649727) 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, 4023 + ... + 6440.

It is an arithmetic number, because the mean of its divisors is an integer number (1171968).

Almost surely, 2^12649767 is an apocalyptic number.

12649767 is a deficient number, since it is larger than the sum of its proper divisors (6101721).

12649767 is a wasteful number, since it uses less digits than its factorization.

12649767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10510.

The product of its digits is 127008, while the sum is 42.

The square root of 12649767 is about 3556.6510933742. The cubic root of 12649767 is about 233.0026401612.

The spelling of 12649767 in words is "twelve million, six hundred forty-nine thousand, seven hundred sixty-seven".