104782857 has 4 divisors (see below), whose sum is σ = 139710480. Its totient is φ = 69855236.

The previous prime is 104782831. The next prime is 104782859. The reversal of 104782857 is 758287401.

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 104782857 - 2²⁴ = 88005641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (104782859) 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, 17463807 + ... + 17463812.

It is an arithmetic number, because the mean of its divisors is an integer number (34927620).

Almost surely, 2^104782857 is an apocalyptic number.

It is an amenable number.

104782857 is a deficient number, since it is larger than the sum of its proper divisors (34927623).

104782857 is an equidigital number, since it uses as much as digits as its factorization.

104782857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34927622.

The product of its (nonzero) digits is 125440, while the sum is 42.

The square root of 104782857 is about 10236.3497888652. The cubic root of 104782857 is about 471.4439627272.

The spelling of 104782857 in words is "one hundred four million, seven hundred eighty-two thousand, eight hundred fifty-seven".