11915671 has 2 divisors, whose sum is σ = 11915672. Its totient is φ = 11915670.

The previous prime is 11915663. The next prime is 11915681. The reversal of 11915671 is 17651911.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11915671 - 2³ = 11915663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11915611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5957835 + 5957836.

It is an arithmetic number, because the mean of its divisors is an integer number (5957836).

Almost surely, 2^11915671 is an apocalyptic number.

11915671 is a deficient number, since it is larger than the sum of its proper divisors (1).

11915671 is an equidigital number, since it uses as much as digits as its factorization.

11915671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1890, while the sum is 31.

The square root of 11915671 is about 3451.9083128032. The cubic root of 11915671 is about 228.4052950702.

The spelling of 11915671 in words is "eleven million, nine hundred fifteen thousand, six hundred seventy-one".