12977345 has 8 divisors (see below), whose sum is σ = 15837120. Its totient is φ = 10205680.

The previous prime is 12977329. The next prime is 12977347. The reversal of 12977345 is 54377921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12977345 - 2⁴ = 12977329 is a prime.

It is a super-2 number, since 2×12977345² = 336822966498050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12977299 and 12977308.

It is not an unprimeable number, because it can be changed into a prime (12977347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21701 + ... + 22290.

It is an arithmetic number, because the mean of its divisors is an integer number (1979640).

Almost surely, 2^12977345 is an apocalyptic number.

It is an amenable number.

12977345 is a deficient number, since it is larger than the sum of its proper divisors (2859775).

12977345 is an equidigital number, since it uses as much as digits as its factorization.

12977345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44055.

The product of its digits is 52920, while the sum is 38.

The square root of 12977345 is about 3602.4082222869. The cubic root of 12977345 is about 234.9968009222.

The spelling of 12977345 in words is "twelve million, nine hundred seventy-seven thousand, three hundred forty-five".