75117665 has 8 divisors (see below), whose sum is σ = 103018560. Its totient is φ = 51509232.

The previous prime is 75117661. The next prime is 75117667. The reversal of 75117665 is 56671157.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 75117665 - 2² = 75117661 is a prime.

It is not an unprimeable number, because it can be changed into a prime (75117661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1073075 + ... + 1073144.

It is an arithmetic number, because the mean of its divisors is an integer number (12877320).

Almost surely, 2^75117665 is an apocalyptic number.

It is an amenable number.

75117665 is a deficient number, since it is larger than the sum of its proper divisors (27900895).

75117665 is a wasteful number, since it uses less digits than its factorization.

75117665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2146231.

The product of its digits is 44100, while the sum is 38.

The square root of 75117665 is about 8667.0447673933. The cubic root of 75117665 is about 421.9367563183.

It can be divided in two parts, 7511 and 7665, that multiplied together give a triangular number (57571815 = T₁₀₇₃₀).

The spelling of 75117665 in words is "seventy-five million, one hundred seventeen thousand, six hundred sixty-five".