11871651 has 8 divisors (see below), whose sum is σ = 17267904. Its totient is φ = 7194920.

The previous prime is 11871649. The next prime is 11871653. The reversal of 11871651 is 15617811.

11871651 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11871649) and next prime (11871653).

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

It is a cyclic number.

It is not a de Polignac number, because 11871651 - 2¹ = 11871649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11871653) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179841 + ... + 179906.

It is an arithmetic number, because the mean of its divisors is an integer number (2158488).

Almost surely, 2^11871651 is an apocalyptic number.

11871651 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11871651 is a deficient number, since it is larger than the sum of its proper divisors (5396253).

11871651 is a wasteful number, since it uses less digits than its factorization.

11871651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359761.

The product of its digits is 1680, while the sum is 30.

The square root of 11871651 is about 3445.5262297652. The cubic root of 11871651 is about 228.1236825094.

The spelling of 11871651 in words is "eleven million, eight hundred seventy-one thousand, six hundred fifty-one".