82140669 has 32 divisors (see below), whose sum is σ = 135296000. Its totient is φ = 48911040.

The previous prime is 82140661. The next prime is 82140677. The reversal of 82140669 is 96604128.

It is an interprime number because it is at equal distance from previous prime (82140661) and next prime (82140677).

It is not a de Polignac number, because 82140669 - 2³ = 82140661 is a prime.

It is a super-2 number, since 2×82140669² = 13494179007535122, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82140661) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7107 + ... + 14655.

It is an arithmetic number, because the mean of its divisors is an integer number (4228000).

Almost surely, 2^82140669 is an apocalyptic number.

It is an amenable number.

82140669 is a deficient number, since it is larger than the sum of its proper divisors (53155331).

82140669 is a wasteful number, since it uses less digits than its factorization.

82140669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7602 (or 7596 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 82140669 is about 9063.1489560748. The cubic root of 82140669 is about 434.6964350553.

The spelling of 82140669 in words is "eighty-two million, one hundred forty thousand, six hundred sixty-nine".