104660781 has 8 divisors (see below), whose sum is σ = 140256864. Its totient is φ = 69419280.

The previous prime is 104660723. The next prime is 104660791. The reversal of 104660781 is 187066401.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-104660781 is a prime.

It is a super-2 number, since 2×104660781² = 21907758159059922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104660711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87955 + ... + 89136.

It is an arithmetic number, because the mean of its divisors is an integer number (17532108).

Almost surely, 2^104660781 is an apocalyptic number.

It is an amenable number.

104660781 is a deficient number, since it is larger than the sum of its proper divisors (35596083).

104660781 is a wasteful number, since it uses less digits than its factorization.

104660781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177291.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 104660781 is about 10230.3851833643. The cubic root of 104660781 is about 471.2608082195.

The spelling of 104660781 in words is "one hundred four million, six hundred sixty thousand, seven hundred eighty-one".