82638586 has 16 divisors (see below), whose sum is σ = 131544000. Its totient is φ = 38851648.

The previous prime is 82638583. The next prime is 82638613. The reversal of 82638586 is 68583628.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is not an unprimeable number, because it can be changed into a prime (82638583) 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, 12511 + ... + 17938.

It is an arithmetic number, because the mean of its divisors is an integer number (8221500).

Almost surely, 2^82638586 is an apocalyptic number.

82638586 is a deficient number, since it is larger than the sum of its proper divisors (48905414).

82638586 is a wasteful number, since it uses less digits than its factorization.

82638586 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30533.

The product of its digits is 552960, while the sum is 46.

The square root of 82638586 is about 9090.5767693805. The cubic root of 82638586 is about 435.5730080249.

The spelling of 82638586 in words is "eighty-two million, six hundred thirty-eight thousand, five hundred eighty-six".