82860644 has 24 divisors (see below), whose sum is σ = 150855936. Its totient is φ = 39780000.

The previous prime is 82860641. The next prime is 82860647. The reversal of 82860644 is 44606828.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (82860641) and next prime (82860647).

It is a junction number, because it is equal to n+sod(n) for n = 82860598 and 82860607.

It is not an unprimeable number, because it can be changed into a prime (82860641) 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, 13694 + ... + 18794.

It is an arithmetic number, because the mean of its divisors is an integer number (6285664).

Almost surely, 2^82860644 is an apocalyptic number.

It is an amenable number.

82860644 is a deficient number, since it is larger than the sum of its proper divisors (67995292).

82860644 is a wasteful number, since it uses less digits than its factorization.

82860644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5267 (or 5265 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 38.

The square root of 82860644 is about 9102.7822120492. The cubic root of 82860644 is about 435.9628015847.

The spelling of 82860644 in words is "eighty-two million, eight hundred sixty thousand, six hundred forty-four".