12972605 has 8 divisors (see below), whose sum is σ = 15947064. Its totient is φ = 10124800.

The previous prime is 12972587. The next prime is 12972613. The reversal of 12972605 is 50627921.

It can be written as a sum of positive squares in 4 ways, for example, as 320356 + 12652249 = 566^2 + 3557^2 .

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

It is not a de Polignac number, because 12972605 - 2¹⁸ = 12710461 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 31436 + ... + 31845.

It is an arithmetic number, because the mean of its divisors is an integer number (1993383).

Almost surely, 2^12972605 is an apocalyptic number.

It is an amenable number.

12972605 is a deficient number, since it is larger than the sum of its proper divisors (2974459).

12972605 is an equidigital number, since it uses as much as digits as its factorization.

12972605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63327.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 12972605 is about 3601.7502689665. The cubic root of 12972605 is about 234.9681864282.

The spelling of 12972605 in words is "twelve million, nine hundred seventy-two thousand, six hundred five".