116664491 has 2 divisors, whose sum is σ = 116664492. Its totient is φ = 116664490.

The previous prime is 116664469. The next prime is 116664521. The reversal of 116664491 is 194466611.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 116664491 - 2¹⁰ = 116663467 is a prime.

It is a super-2 number, since 2×116664491² = 27221206920578162, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (116664091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58332245 + 58332246.

It is an arithmetic number, because the mean of its divisors is an integer number (58332246).

Almost surely, 2^116664491 is an apocalyptic number.

116664491 is a deficient number, since it is larger than the sum of its proper divisors (1).

116664491 is an equidigital number, since it uses as much as digits as its factorization.

116664491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 38.

The square root of 116664491 is about 10801.1337830804. The cubic root of 116664491 is about 488.6293655084.

The spelling of 116664491 in words is "one hundred sixteen million, six hundred sixty-four thousand, four hundred ninety-one".