9904662545 has 8 divisors (see below), whose sum is σ = 11890486824. Its totient is φ = 7920468864.

The previous prime is 9904662517. The next prime is 9904662577. The reversal of 9904662545 is 5452664099.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1882952449 + 8021710096 = 43393^2 + 89564^2 .

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 9904662545 - 2²² = 9900468241 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9904662493 and 9904662502.

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, 394244 + ... + 418613.

It is an arithmetic number, because the mean of its divisors is an integer number (1486310853).

Almost surely, 2^9904662545 is an apocalyptic number.

It is an amenable number.

9904662545 is a deficient number, since it is larger than the sum of its proper divisors (1985824279).

9904662545 is a wasteful number, since it uses less digits than its factorization.

9904662545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 815299.

The product of its (nonzero) digits is 2332800, while the sum is 50.

The square root of 9904662545 is about 99522.1711228207. The cubic root of 9904662545 is about 2147.5662054278.

The spelling of 9904662545 in words is "nine billion, nine hundred four million, six hundred sixty-two thousand, five hundred forty-five".