82695640 has 32 divisors (see below), whose sum is σ = 186439680. Its totient is φ = 33011712.

The previous prime is 82695623. The next prime is 82695643. The reversal of 82695640 is 4659628.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 82695593 and 82695602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82695643) 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, 21289 + ... + 24871.

It is an arithmetic number, because the mean of its divisors is an integer number (5826240).

Almost surely, 2^82695640 is an apocalyptic number.

It is an amenable number.

82695640 is an abundant number, since it is smaller than the sum of its proper divisors (103744040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

82695640 is a wasteful number, since it uses less digits than its factorization.

82695640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4171 (or 4167 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 82695640 is about 9093.7143126448. The cubic root of 82695640 is about 435.6732253958.

The spelling of 82695640 in words is "eighty-two million, six hundred ninety-five thousand, six hundred forty".