117865601 has 4 divisors (see below), whose sum is σ = 134703552. Its totient is φ = 101027652.

The previous prime is 117865591. The next prime is 117865619. The reversal of 117865601 is 106568711.

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, and also an emirpimes, since its reverse is a distinct semiprime: 106568711 = 373 ⋅285707.

It is a cyclic number.

It is not a de Polignac number, because 117865601 - 2¹⁰ = 117864577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117865661) 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, 8418965 + ... + 8418978.

It is an arithmetic number, because the mean of its divisors is an integer number (33675888).

Almost surely, 2^117865601 is an apocalyptic number.

It is an amenable number.

117865601 is a deficient number, since it is larger than the sum of its proper divisors (16837951).

117865601 is an equidigital number, since it uses as much as digits as its factorization.

117865601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16837950.

The product of its (nonzero) digits is 10080, while the sum is 35.

The square root of 117865601 is about 10856.5925133073. The cubic root of 117865601 is about 490.3005250720.

The spelling of 117865601 in words is "one hundred seventeen million, eight hundred sixty-five thousand, six hundred one".