103664725 has 12 divisors (see below), whose sum is σ = 136106244. Its totient is φ = 78053120.

The previous prime is 103664723. The next prime is 103664747. The reversal of 103664725 is 527466301.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 10407076 + 93257649 = 3226^2 + 9657^2 .

It is not a de Polignac number, because 103664725 - 2¹ = 103664723 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103664723) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 121534 + ... + 122383.

It is an arithmetic number, because the mean of its divisors is an integer number (11342187).

Almost surely, 2^103664725 is an apocalyptic number.

It is an amenable number.

103664725 is a deficient number, since it is larger than the sum of its proper divisors (32441519).

103664725 is a wasteful number, since it uses less digits than its factorization.

103664725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243944 (or 243939 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 103664725 is about 10181.5875481184. The cubic root of 103664725 is about 469.7610449726.

The spelling of 103664725 in words is "one hundred three million, six hundred sixty-four thousand, seven hundred twenty-five".