118072817 has 4 divisors (see below), whose sum is σ = 120300660. Its totient is φ = 115844976.

The previous prime is 118072813. The next prime is 118072819. The reversal of 118072817 is 718270811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 718270811 = 29 ⋅24767959.

It can be written as a sum of positive squares in 2 ways, for example, as 34093921 + 83978896 = 5839^2 + 9164^2 .

It is a cyclic number.

It is not a de Polignac number, because 118072817 - 2² = 118072813 is a prime.

It is a super-2 number, since 2×118072817² = 27882380228630978, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (118072811) 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, 1113842 + ... + 1113947.

It is an arithmetic number, because the mean of its divisors is an integer number (30075165).

Almost surely, 2^118072817 is an apocalyptic number.

It is an amenable number.

118072817 is a deficient number, since it is larger than the sum of its proper divisors (2227843).

118072817 is an equidigital number, since it uses as much as digits as its factorization.

118072817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2227842.

The product of its (nonzero) digits is 6272, while the sum is 35.

The square root of 118072817 is about 10866.1316483834. The cubic root of 118072817 is about 490.5876844353.

The spelling of 118072817 in words is "one hundred eighteen million, seventy-two thousand, eight hundred seventeen".