104206721 has 8 divisors (see below), whose sum is σ = 109534464. Its totient is φ = 98945440.

The previous prime is 104206703. The next prime is 104206733. The reversal of 104206721 is 127602401.

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

It is a cyclic number.

It is not a de Polignac number, because 104206721 - 2¹⁰ = 104205697 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is not an unprimeable number, because it can be changed into a prime (104206741) 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, 13385 + ... + 19686.

It is an arithmetic number, because the mean of its divisors is an integer number (13691808).

Almost surely, 2^104206721 is an apocalyptic number.

It is an amenable number.

104206721 is a deficient number, since it is larger than the sum of its proper divisors (5327743).

104206721 is a wasteful number, since it uses less digits than its factorization.

104206721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33231.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 104206721 is about 10208.1693265737. The cubic root of 104206721 is about 470.5783148255.

The spelling of 104206721 in words is "one hundred four million, two hundred six thousand, seven hundred twenty-one".