989716570 has 16 divisors (see below), whose sum is σ = 1806582528. Its totient is φ = 390310480.

The previous prime is 989716549. The next prime is 989716573. The reversal of 989716570 is 75617989.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (989716573) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 696274 + ... + 697693.

It is an arithmetic number, because the mean of its divisors is an integer number (112911408).

Almost surely, 2^989716570 is an apocalyptic number.

989716570 is a deficient number, since it is larger than the sum of its proper divisors (816865958).

989716570 is a wasteful number, since it uses less digits than its factorization.

989716570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1394045.

The product of its (nonzero) digits is 952560, while the sum is 52.

The square root of 989716570 is about 31459.7611243315. The cubic root of 989716570 is about 996.5603725276.

The spelling of 989716570 in words is "nine hundred eighty-nine million, seven hundred sixteen thousand, five hundred seventy".