12649377 has 16 divisors (see below), whose sum is σ = 19232640. Its totient is φ = 7325952.

The previous prime is 12649349. The next prime is 12649391. The reversal of 12649377 is 77394621.

It is not a de Polignac number, because 12649377 - 2⁶ = 12649313 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (12649177) 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, 8877 + ... + 10202.

It is an arithmetic number, because the mean of its divisors is an integer number (1202040).

Almost surely, 2^12649377 is an apocalyptic number.

12649377 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

12649377 is a deficient number, since it is larger than the sum of its proper divisors (6583263).

12649377 is a wasteful number, since it uses less digits than its factorization.

12649377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19112.

The product of its digits is 63504, while the sum is 39.

The square root of 12649377 is about 3556.5962660949. The cubic root of 12649377 is about 233.0002455989. Note that the first 3 decimals are identical.

The spelling of 12649377 in words is "twelve million, six hundred forty-nine thousand, three hundred seventy-seven".