116640415 has 4 divisors (see below), whose sum is σ = 139968504. Its totient is φ = 93312328.

The previous prime is 116640413. The next prime is 116640421. The reversal of 116640415 is 514046611.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 116640415 - 2¹ = 116640413 is a prime.

It is a super-2 number, since 2×116640415² = 27209972822744450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116640413) 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, 11664037 + ... + 11664046.

It is an arithmetic number, because the mean of its divisors is an integer number (34992126).

Almost surely, 2^116640415 is an apocalyptic number.

116640415 is a deficient number, since it is larger than the sum of its proper divisors (23328089).

116640415 is an equidigital number, since it uses as much as digits as its factorization.

116640415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23328088.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 116640415 is about 10800.0192129459. The cubic root of 116640415 is about 488.5957504531.

The spelling of 116640415 in words is "one hundred sixteen million, six hundred forty thousand, four hundred fifteen".