82985669 has 8 divisors (see below), whose sum is σ = 90205920. Its totient is φ = 75884976.

The previous prime is 82985663. The next prime is 82985677. The reversal of 82985669 is 96658928.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82985669 is a prime.

It is a super-2 number, since 2×82985669² = 13773242518755122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 82985669.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82985663) 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, 28439 + ... + 31220.

It is an arithmetic number, because the mean of its divisors is an integer number (11275740).

Almost surely, 2^82985669 is an apocalyptic number.

It is an amenable number.

82985669 is a deficient number, since it is larger than the sum of its proper divisors (7220251).

82985669 is a wasteful number, since it uses less digits than its factorization.

82985669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59779.

The product of its digits is 1866240, while the sum is 53.

The square root of 82985669 is about 9109.6470293859. The cubic root of 82985669 is about 436.1819601443.

The spelling of 82985669 in words is "eighty-two million, nine hundred eighty-five thousand, six hundred sixty-nine".