104677721 has 4 divisors (see below), whose sum is σ = 110835252. Its totient is φ = 98520192.

The previous prime is 104677717. The next prime is 104677751. The reversal of 104677721 is 127776401.

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 52765696 + 51912025 = 7264^2 + 7205^2 .

It is a cyclic number.

It is not a de Polignac number, because 104677721 - 2² = 104677717 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (104677711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3078740 + ... + 3078773.

It is an arithmetic number, because the mean of its divisors is an integer number (27708813).

Almost surely, 2^104677721 is an apocalyptic number.

It is an amenable number.

104677721 is a deficient number, since it is larger than the sum of its proper divisors (6157531).

104677721 is an equidigital number, since it uses as much as digits as its factorization.

104677721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6157530.

The product of its (nonzero) digits is 16464, while the sum is 35.

The square root of 104677721 is about 10231.2130756817. The cubic root of 104677721 is about 471.2862323480.

The spelling of 104677721 in words is "one hundred four million, six hundred seventy-seven thousand, seven hundred twenty-one".