83111897 has 8 divisors (see below), whose sum is σ = 92378880. Its totient is φ = 74130160.

The previous prime is 83111893. The next prime is 83111923. The reversal of 83111897 is 79811138.

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 83111897 - 2² = 83111893 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 83111897.

It is not an unprimeable number, because it can be changed into a prime (83111893) 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, 70697 + ... + 71862.

It is an arithmetic number, because the mean of its divisors is an integer number (11547360).

Almost surely, 2^83111897 is an apocalyptic number.

It is an amenable number.

83111897 is a deficient number, since it is larger than the sum of its proper divisors (9266983).

83111897 is a wasteful number, since it uses less digits than its factorization.

83111897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142623.

The product of its digits is 12096, while the sum is 38.

The square root of 83111897 is about 9116.5726564318. The cubic root of 83111897 is about 436.4030042699.

The spelling of 83111897 in words is "eighty-three million, one hundred eleven thousand, eight hundred ninety-seven".