116664401 has 4 divisors (see below), whose sum is σ = 133330752. Its totient is φ = 99998052.

The previous prime is 116664397. The next prime is 116664403. The reversal of 116664401 is 104466611.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 116664401 - 2² = 116664397 is a prime.

It is a super-2 number, since 2×116664401² = 27221164921377602, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (116664403) 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, 8333165 + ... + 8333178.

It is an arithmetic number, because the mean of its divisors is an integer number (33332688).

Almost surely, 2^116664401 is an apocalyptic number.

It is an amenable number.

116664401 is a deficient number, since it is larger than the sum of its proper divisors (16666351).

116664401 is an equidigital number, since it uses as much as digits as its factorization.

116664401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16666350.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 116664401 is about 10801.1296168503. The cubic root of 116664401 is about 488.6292398585.

The spelling of 116664401 in words is "one hundred sixteen million, six hundred sixty-four thousand, four hundred one".