704166106721 has 24 divisors (see below), whose sum is σ = 901262400192. Its totient is φ = 538347981600.

The previous prime is 704166106717. The next prime is 704166106799. The reversal of 704166106721 is 127601661407.

It is not a de Polignac number, because 704166106721 - 2² = 704166106717 is a prime.

It is a super-2 number, since 2×704166106721² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (704166106711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7798175 + ... + 7887956.

It is an arithmetic number, because the mean of its divisors is an integer number (37552600008).

Almost surely, 2^704166106721 is an apocalyptic number.

It is an amenable number.

704166106721 is a deficient number, since it is larger than the sum of its proper divisors (197096293471).

704166106721 is a wasteful number, since it uses less digits than its factorization.

704166106721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15686213 (or 15686202 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 41.

The spelling of 704166106721 in words is "seven hundred four billion, one hundred sixty-six million, one hundred six thousand, seven hundred twenty-one".