82798457 has 4 divisors (see below), whose sum is σ = 94626816. Its totient is φ = 70970100.

The previous prime is 82798453. The next prime is 82798481. The reversal of 82798457 is 75489728.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 82798457 - 2² = 82798453 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82798453) 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, 5914169 + ... + 5914182.

It is an arithmetic number, because the mean of its divisors is an integer number (23656704).

Almost surely, 2^82798457 is an apocalyptic number.

It is an amenable number.

82798457 is a deficient number, since it is larger than the sum of its proper divisors (11828359).

82798457 is a wasteful number, since it uses less digits than its factorization.

82798457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11828358.

The product of its digits is 1128960, while the sum is 50.

The square root of 82798457 is about 9099.3657471277. The cubic root of 82798457 is about 435.8537107764.

The spelling of 82798457 in words is "eighty-two million, seven hundred ninety-eight thousand, four hundred fifty-seven".