116551665 has 24 divisors (see below), whose sum is σ = 207485928. Its totient is φ = 60480000.

The previous prime is 116551651. The next prime is 116551679. The reversal of 116551665 is 566155611.

It is an interprime number because it is at equal distance from previous prime (116551651) and next prime (116551679).

It can be written as a sum of positive squares in 4 ways, for example, as 54819216 + 61732449 = 7404^2 + 7857^2 .

It is not a de Polignac number, because 116551665 - 2¹⁴ = 116535281 is a prime.

It is a super-2 number, since 2×116551665² = 27168581228544450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33336 + ... + 36665.

It is an arithmetic number, because the mean of its divisors is an integer number (8645247).

Almost surely, 2^116551665 is an apocalyptic number.

116551665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

116551665 is a deficient number, since it is larger than the sum of its proper divisors (90934263).

116551665 is a wasteful number, since it uses less digits than its factorization.

116551665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70049 (or 70046 counting only the distinct ones).

The product of its digits is 27000, while the sum is 36.

The square root of 116551665 is about 10795.9096420820. The cubic root of 116551665 is about 488.4717972031.

The spelling of 116551665 in words is "one hundred sixteen million, five hundred fifty-one thousand, six hundred sixty-five".