6916689625 has 8 divisors (see below), whose sum is σ = 8632028808. Its totient is φ = 5533351600.

The previous prime is 6916689599. The next prime is 6916689667. The reversal of 6916689625 is 5269866196.

It can be written as a sum of positive squares in 4 ways, for example, as 1883212816 + 5033476809 = 43396^2 + 70947^2 .

It is not a de Polignac number, because 6916689625 - 2⁷ = 6916689497 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6916689625.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27666634 + ... + 27666883.

It is an arithmetic number, because the mean of its divisors is an integer number (1079003601).

Almost surely, 2^6916689625 is an apocalyptic number.

It is an amenable number.

6916689625 is a deficient number, since it is larger than the sum of its proper divisors (1715339183).

6916689625 is an equidigital number, since it uses as much as digits as its factorization.

6916689625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55333532 (or 55333522 counting only the distinct ones).

The product of its digits is 8398080, while the sum is 58.

The square root of 6916689625 is about 83166.6376920457. The cubic root of 6916689625 is about 1905.3119702725.

The spelling of 6916689625 in words is "six billion, nine hundred sixteen million, six hundred eighty-nine thousand, six hundred twenty-five".