82493647 has 4 divisors (see below), whose sum is σ = 82791736. Its totient is φ = 82195560.

The previous prime is 82493641. The next prime is 82493657. The reversal of 82493647 is 74639428.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82493647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82493641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148629 + ... + 149182.

It is an arithmetic number, because the mean of its divisors is an integer number (20697934).

Almost surely, 2^82493647 is an apocalyptic number.

82493647 is a deficient number, since it is larger than the sum of its proper divisors (298089).

82493647 is a wasteful number, since it uses less digits than its factorization.

82493647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298088.

The product of its digits is 290304, while the sum is 43.

The square root of 82493647 is about 9082.6013344196. The cubic root of 82493647 is about 435.3182099382.

The spelling of 82493647 in words is "eighty-two million, four hundred ninety-three thousand, six hundred forty-seven".