9880785634 has 8 divisors (see below), whose sum is σ = 15332253660. Its totient is φ = 4770034416.

The previous prime is 9880785623. The next prime is 9880785647. The reversal of 9880785634 is 4365870889.

It can be written as a sum of positive squares in 2 ways, for example, as 9798030225 + 82755409 = 98985^2 + 9097^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (58), and also a Moran number because the ratio is a prime number: 170358373 = 9880785634 / (9 + 8 + 8 + 0 + 7 + 8 + 5 + 6 + 3 + 4).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85179129 + ... + 85179244.

Almost surely, 2^9880785634 is an apocalyptic number.

9880785634 is a deficient number, since it is larger than the sum of its proper divisors (5451468026).

9880785634 is a wasteful number, since it uses less digits than its factorization.

9880785634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170358404.

The product of its (nonzero) digits is 11612160, while the sum is 58.

The square root of 9880785634 is about 99402.1409930390. The cubic root of 9880785634 is about 2145.8391229744.

The spelling of 9880785634 in words is "nine billion, eight hundred eighty million, seven hundred eighty-five thousand, six hundred thirty-four".