12617901 has 6 divisors (see below), whose sum is σ = 18225870. Its totient is φ = 8411928.

The previous prime is 12617887. The next prime is 12617903. The reversal of 12617901 is 10971621.

12617901 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 12595401 + 22500 = 3549^2 + 150^2 .

It is not a de Polignac number, because 12617901 - 2¹⁷ = 12486829 is a prime.

It is a super-2 number, since 2×12617901² = 318422851291602, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12617903) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 700986 + ... + 701003.

It is an arithmetic number, because the mean of its divisors is an integer number (3037645).

Almost surely, 2^12617901 is an apocalyptic number.

It is an amenable number.

12617901 is a deficient number, since it is larger than the sum of its proper divisors (5607969).

12617901 is a wasteful number, since it uses less digits than its factorization.

12617901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1401995 (or 1401992 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 27.

The square root of 12617901 is about 3552.1684926253. The cubic root of 12617901 is about 232.8068234972.

The spelling of 12617901 in words is "twelve million, six hundred seventeen thousand, nine hundred one".