12970661 has 4 divisors (see below), whose sum is σ = 14149824. Its totient is φ = 11791500.

The previous prime is 12970651. The next prime is 12970663. The reversal of 12970661 is 16607921.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12970661 - 2¹⁸ = 12708517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12970663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 589565 + ... + 589586.

It is an arithmetic number, because the mean of its divisors is an integer number (3537456).

Almost surely, 2^12970661 is an apocalyptic number.

12970661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12970661 is a deficient number, since it is larger than the sum of its proper divisors (1179163).

12970661 is a wasteful number, since it uses less digits than its factorization.

12970661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1179162.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 12970661 is about 3601.4803900618. The cubic root of 12970661 is about 234.9564488481.

It can be divided in two parts, 12970 and 661, that added together give a palindrome (13631).

The spelling of 12970661 in words is "twelve million, nine hundred seventy thousand, six hundred sixty-one".