116643457 has 4 divisors (see below), whose sum is σ = 133306816. Its totient is φ = 99980100.

The previous prime is 116643389. The next prime is 116643463. The reversal of 116643457 is 754346611.

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 a cyclic number.

It is not a de Polignac number, because 116643457 - 2¹⁹ = 116119169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (116643467) 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, 8331669 + ... + 8331682.

It is an arithmetic number, because the mean of its divisors is an integer number (33326704).

Almost surely, 2^116643457 is an apocalyptic number.

It is an amenable number.

116643457 is a deficient number, since it is larger than the sum of its proper divisors (16663359).

116643457 is an equidigital number, since it uses as much as digits as its factorization.

116643457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16663358.

The product of its digits is 60480, while the sum is 37.

The square root of 116643457 is about 10800.1600451104. The cubic root of 116643457 is about 488.5999979670.

The spelling of 116643457 in words is "one hundred sixteen million, six hundred forty-three thousand, four hundred fifty-seven".