82639365 has 16 divisors (see below), whose sum is σ = 133818048. Its totient is φ = 43542656.

The previous prime is 82639343. The next prime is 82639387. The reversal of 82639365 is 56393628.

It is an interprime number because it is at equal distance from previous prime (82639343) and next prime (82639387).

It is a cyclic number.

It is not a de Polignac number, because 82639365 - 2¹² = 82635269 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, 31944 + ... + 34433.

It is an arithmetic number, because the mean of its divisors is an integer number (8363628).

Almost surely, 2^82639365 is an apocalyptic number.

It is an amenable number.

82639365 is a deficient number, since it is larger than the sum of its proper divisors (51178683).

82639365 is a wasteful number, since it uses less digits than its factorization.

82639365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66468.

The product of its digits is 233280, while the sum is 42.

The square root of 82639365 is about 9090.6196158458. The cubic root of 82639365 is about 435.5743766765.

The spelling of 82639365 in words is "eighty-two million, six hundred thirty-nine thousand, three hundred sixty-five".