104569681 has 4 divisors (see below), whose sum is σ = 104632164. Its totient is φ = 104507200.

The previous prime is 104569667. The next prime is 104569687. The reversal of 104569681 is 186965401.

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

It can be written as a sum of positive squares in 2 ways, for example, as 87890625 + 16679056 = 9375^2 + 4084^2 .

It is a cyclic number.

It is not a de Polignac number, because 104569681 - 2¹³ = 104561489 is a prime.

It is a super-2 number, since 2×104569681² = 21869636368883522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (104569687) 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, 28660 + ... + 32101.

It is an arithmetic number, because the mean of its divisors is an integer number (26158041).

Almost surely, 2^104569681 is an apocalyptic number.

It is an amenable number.

104569681 is a deficient number, since it is larger than the sum of its proper divisors (62483).

104569681 is an equidigital number, since it uses as much as digits as its factorization.

104569681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62482.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 104569681 is about 10225.9317912844. The cubic root of 104569681 is about 471.1240351716.

The spelling of 104569681 in words is "one hundred four million, five hundred sixty-nine thousand, six hundred eighty-one".