84663257 has 4 divisors (see below), whose sum is σ = 96758016. Its totient is φ = 72568500.

The previous prime is 84663251. The next prime is 84663301. The reversal of 84663257 is 75236648.

It is a happy number.

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 84663257 - 2²⁰ = 83614681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84663251) 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, 6047369 + ... + 6047382.

It is an arithmetic number, because the mean of its divisors is an integer number (24189504).

Almost surely, 2^84663257 is an apocalyptic number.

It is an amenable number.

84663257 is a deficient number, since it is larger than the sum of its proper divisors (12094759).

84663257 is a wasteful number, since it uses less digits than its factorization.

84663257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12094758.

The product of its digits is 241920, while the sum is 41.

The square root of 84663257 is about 9201.2638805764. The cubic root of 84663257 is about 439.1015706851.

The spelling of 84663257 in words is "eighty-four million, six hundred sixty-three thousand, two hundred fifty-seven".