11712651 has 4 divisors (see below), whose sum is σ = 15616872. Its totient is φ = 7808432.

The previous prime is 11712611. The next prime is 11712661. The reversal of 11712651 is 15621711.

11712651 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11712651 - 2⁶ = 11712587 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11712611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1952106 + ... + 1952111.

It is an arithmetic number, because the mean of its divisors is an integer number (3904218).

Almost surely, 2^11712651 is an apocalyptic number.

11712651 is the 2165-th centered pentagonal number.

11712651 is a deficient number, since it is larger than the sum of its proper divisors (3904221).

11712651 is an equidigital number, since it uses as much as digits as its factorization.

11712651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3904220.

The product of its digits is 420, while the sum is 24.

The square root of 11712651 is about 3422.3750525037. The cubic root of 11712651 is about 227.1006624002.

The spelling of 11712651 in words is "eleven million, seven hundred twelve thousand, six hundred fifty-one".