81922675 has 12 divisors (see below), whose sum is σ = 101696616. Its totient is φ = 65465600.

The previous prime is 81922667. The next prime is 81922679. The reversal of 81922675 is 57622918.

It is not a de Polignac number, because 81922675 - 2³ = 81922667 is a prime.

It is a super-2 number, since 2×81922675² = 13422649358311250, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (81922679) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41460 + ... + 43390.

It is an arithmetic number, because the mean of its divisors is an integer number (8474718).

Almost surely, 2^81922675 is an apocalyptic number.

81922675 is a deficient number, since it is larger than the sum of its proper divisors (19773941).

81922675 is a wasteful number, since it uses less digits than its factorization.

81922675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3638 (or 3633 counting only the distinct ones).

The product of its digits is 60480, while the sum is 40.

The square root of 81922675 is about 9051.1145722502. The cubic root of 81922675 is about 434.3115458610.

The spelling of 81922675 in words is "eighty-one million, nine hundred twenty-two thousand, six hundred seventy-five".