82965681 has 16 divisors (see below), whose sum is σ = 123083520. Its totient is φ = 55233360.

The previous prime is 82965667. The next prime is 82965683. The reversal of 82965681 is 18656928.

82965681 is a `hidden beast` number, since 82 + 9 + 6 + 568 + 1 = 666.

It is not a de Polignac number, because 82965681 - 2¹³ = 82957489 is a prime.

It is a super-2 number, since 2×82965681² = 13766608447587522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (82965683) 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, 22911 + ... + 26283.

It is an arithmetic number, because the mean of its divisors is an integer number (7692720).

Almost surely, 2^82965681 is an apocalyptic number.

It is an amenable number.

82965681 is a deficient number, since it is larger than the sum of its proper divisors (40117839).

82965681 is a wasteful number, since it uses less digits than its factorization.

82965681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4293 (or 4287 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The square root of 82965681 is about 9108.5498845865. The cubic root of 82965681 is about 436.1469376109.

The spelling of 82965681 in words is "eighty-two million, nine hundred sixty-five thousand, six hundred eighty-one".