116642566 has 4 divisors (see below), whose sum is σ = 174963852. Its totient is φ = 58321282.

The previous prime is 116642551. The next prime is 116642569. The reversal of 116642566 is 665246611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 665246611 = 733 ⋅907567.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116642569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 29160640 + ... + 29160643.

It is an arithmetic number, because the mean of its divisors is an integer number (43740963).

Almost surely, 2^116642566 is an apocalyptic number.

116642566 is a deficient number, since it is larger than the sum of its proper divisors (58321286).

116642566 is an equidigital number, since it uses as much as digits as its factorization.

116642566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58321285.

The product of its digits is 51840, while the sum is 37.

The square root of 116642566 is about 10800.1187956429. The cubic root of 116642566 is about 488.5987538804.

The spelling of 116642566 in words is "one hundred sixteen million, six hundred forty-two thousand, five hundred sixty-six".