690718925 has 24 divisors (see below), whose sum is σ = 976640616. Its totient is φ = 480061440.

The previous prime is 690718867. The next prime is 690718979. The reversal of 690718925 is 529817096.

690718925 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 12 ways, for example, as 399880009 + 290838916 = 19997^2 + 17054^2 .

It is not a de Polignac number, because 690718925 - 2¹⁶ = 690653389 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 690718925.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56984 + ... + 68033.

It is an arithmetic number, because the mean of its divisors is an integer number (40693359).

Almost surely, 2^690718925 is an apocalyptic number.

690718925 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

690718925 is a deficient number, since it is larger than the sum of its proper divisors (285921691).

690718925 is a wasteful number, since it uses less digits than its factorization.

690718925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125057 (or 125052 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 47.

The square root of 690718925 is about 26281.5320139447. The cubic root of 690718925 is about 883.9623852773.

The spelling of 690718925 in words is "six hundred ninety million, seven hundred eighteen thousand, nine hundred twenty-five".