82651863 has 16 divisors (see below), whose sum is σ = 126162176. Its totient is φ = 47148480.

The previous prime is 82651853. The next prime is 82651867. The reversal of 82651863 is 36815628.

It is a happy number.

It is not a de Polignac number, because 82651863 - 2⁵ = 82651831 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82651867) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10443 + ... + 16563.

It is an arithmetic number, because the mean of its divisors is an integer number (7885136).

Almost surely, 2^82651863 is an apocalyptic number.

82651863 is a deficient number, since it is larger than the sum of its proper divisors (43510313).

82651863 is a wasteful number, since it uses less digits than its factorization.

82651863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6774.

The product of its digits is 69120, while the sum is 39.

The square root of 82651863 is about 9091.3070017462. The cubic root of 82651863 is about 435.5963336625.

The spelling of 82651863 in words is "eighty-two million, six hundred fifty-one thousand, eight hundred sixty-three".