12997770 has 16 divisors (see below), whose sum is σ = 31194720. Its totient is φ = 3466064.

The previous prime is 12997763. The next prime is 12997781. The reversal of 12997770 is 7779921.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216600 + ... + 216659.

It is an arithmetic number, because the mean of its divisors is an integer number (1949670).

Almost surely, 2^12997770 is an apocalyptic number.

12997770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12997770 is an abundant number, since it is smaller than the sum of its proper divisors (18196950).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12997770 is a wasteful number, since it uses less digits than its factorization.

12997770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433269.

The product of its (nonzero) digits is 55566, while the sum is 42.

The square root of 12997770 is about 3605.2420168416. The cubic root of 12997770 is about 235.1200231921.

The spelling of 12997770 in words is "twelve million, nine hundred ninety-seven thousand, seven hundred seventy".