694125921 has 8 divisors (see below), whose sum is σ = 925629120. Its totient is φ = 462686672.

The previous prime is 694125911. The next prime is 694125923. The reversal of 694125921 is 129521496.

694125921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 694125921 - 2⁶ = 694125857 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 694125921.

It is not an unprimeable number, because it can be changed into a prime (694125923) 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, 22756 + ... + 43658.

It is an arithmetic number, because the mean of its divisors is an integer number (115703640).

Almost surely, 2^694125921 is an apocalyptic number.

It is an amenable number.

694125921 is a deficient number, since it is larger than the sum of its proper divisors (231503199).

694125921 is a wasteful number, since it uses less digits than its factorization.

694125921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31975.

The product of its digits is 38880, while the sum is 39.

The square root of 694125921 is about 26346.2695841366. The cubic root of 694125921 is about 885.4133942795.

The spelling of 694125921 in words is "six hundred ninety-four million, one hundred twenty-five thousand, nine hundred twenty-one".