83620117 has 6 divisors (see below), whose sum is σ = 97272438. Its totient is φ = 71674344.

The previous prime is 83620109. The next prime is 83620139. The reversal of 83620117 is 71102638.

It can be written as a sum of positive squares in only one way, i.e., 75099556 + 8520561 = 8666^2 + 2919^2 .

It is not a de Polignac number, because 83620117 - 2³ = 83620109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83620177) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 853218 + ... + 853315.

It is an arithmetic number, because the mean of its divisors is an integer number (16212073).

Almost surely, 2^83620117 is an apocalyptic number.

It is an amenable number.

83620117 is a deficient number, since it is larger than the sum of its proper divisors (13652321).

83620117 is a wasteful number, since it uses less digits than its factorization.

83620117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1706547 (or 1706540 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 83620117 is about 9144.4035890811. The cubic root of 83620117 is about 437.2907159021.

The spelling of 83620117 in words is "eighty-three million, six hundred twenty thousand, one hundred seventeen".