82617671 has 4 divisors (see below), whose sum is σ = 87477552. Its totient is φ = 77757792.

The previous prime is 82617649. The next prime is 82617673. The reversal of 82617671 is 17671628.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82617671 is a prime.

It is a super-2 number, since 2×82617671² = 13651359122928482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82617673) 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, 2429915 + ... + 2429948.

It is an arithmetic number, because the mean of its divisors is an integer number (21869388).

Almost surely, 2^82617671 is an apocalyptic number.

82617671 is a deficient number, since it is larger than the sum of its proper divisors (4859881).

82617671 is a wasteful number, since it uses less digits than its factorization.

82617671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4859880.

The product of its digits is 28224, while the sum is 38.

The square root of 82617671 is about 9089.4263295326. The cubic root of 82617671 is about 435.5362585330.

The spelling of 82617671 in words is "eighty-two million, six hundred seventeen thousand, six hundred seventy-one".