82077685 has 16 divisors (see below), whose sum is σ = 106323840. Its totient is φ = 60639040.

The previous prime is 82077679. The next prime is 82077691. The reversal of 82077685 is 58677028.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (82077679) and next prime (82077691).

It is not a de Polignac number, because 82077685 - 2¹⁹ = 81553397 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8971 + ... + 15640.

It is an arithmetic number, because the mean of its divisors is an integer number (6645240).

Almost surely, 2^82077685 is an apocalyptic number.

It is an amenable number.

82077685 is a deficient number, since it is larger than the sum of its proper divisors (24246155).

82077685 is a wasteful number, since it uses less digits than its factorization.

82077685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24668.

The product of its (nonzero) digits is 188160, while the sum is 43.

The square root of 82077685 is about 9059.6735592404. The cubic root of 82077685 is about 434.5853008207.

The spelling of 82077685 in words is "eighty-two million, seventy-seven thousand, six hundred eighty-five".