12977756 has 12 divisors (see below), whose sum is σ = 24775800. Its totient is φ = 5898960.

The previous prime is 12977753. The next prime is 12977759. The reversal of 12977756 is 65777921.

It is an interprime number because it is at equal distance from previous prime (12977753) and next prime (12977759).

It is a Harshad number since it is a multiple of its sum of digits (44), and also a Moran number because the ratio is a prime number: 294949 = 12977756 / (1 + 2 + 9 + 7 + 7 + 7 + 5 + 6).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12977753) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 147431 + ... + 147518.

It is an arithmetic number, because the mean of its divisors is an integer number (2064650).

Almost surely, 2^12977756 is an apocalyptic number.

It is an amenable number.

12977756 is a deficient number, since it is larger than the sum of its proper divisors (11798044).

12977756 is a wasteful number, since it uses less digits than its factorization.

12977756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294964 (or 294962 counting only the distinct ones).

The product of its digits is 185220, while the sum is 44.

The square root of 12977756 is about 3602.4652670081. The cubic root of 12977756 is about 234.9992817241. Note that the first 3 decimals are identical.

The spelling of 12977756 in words is "twelve million, nine hundred seventy-seven thousand, seven hundred fifty-six".