82111377 has 8 divisors (see below), whose sum is σ = 115922016. Its totient is φ = 51520832.

The previous prime is 82111339. The next prime is 82111391. The reversal of 82111377 is 77311128.

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 82111377 - 2⁶ = 82111313 is a prime.

It is a super-2 number, since 2×82111377² = 13484556465672258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (82111327) 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, 804963 + ... + 805064.

It is an arithmetic number, because the mean of its divisors is an integer number (14490252).

Almost surely, 2^82111377 is an apocalyptic number.

It is an amenable number.

82111377 is a deficient number, since it is larger than the sum of its proper divisors (33810639).

82111377 is a wasteful number, since it uses less digits than its factorization.

82111377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1610047.

The product of its digits is 2352, while the sum is 30.

The square root of 82111377 is about 9061.5328173549. The cubic root of 82111377 is about 434.6447568712.

The spelling of 82111377 in words is "eighty-two million, one hundred eleven thousand, three hundred seventy-seven".