82133645 has 8 divisors (see below), whose sum is σ = 107520480. Its totient is φ = 59733520.

The previous prime is 82133641. The next prime is 82133657. The reversal of 82133645 is 54633128.

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

It is not a de Polignac number, because 82133645 - 2² = 82133641 is a prime.

It is a super-3 number, since 3×82133645³ (a number of 25 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82133641) 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, 746615 + ... + 746724.

It is an arithmetic number, because the mean of its divisors is an integer number (13440060).

Almost surely, 2^82133645 is an apocalyptic number.

It is an amenable number.

82133645 is a deficient number, since it is larger than the sum of its proper divisors (25386835).

82133645 is a wasteful number, since it uses less digits than its factorization.

82133645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1493355.

The product of its digits is 17280, while the sum is 32.

The square root of 82133645 is about 9062.7614445046. The cubic root of 82133645 is about 434.6840441377.

The spelling of 82133645 in words is "eighty-two million, one hundred thirty-three thousand, six hundred forty-five".