989618606 has 4 divisors (see below), whose sum is σ = 1484427912. Its totient is φ = 494809302.

The previous prime is 989618593. The next prime is 989618633. The reversal of 989618606 is 606816989.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247404650 + ... + 247404653.

It is an arithmetic number, because the mean of its divisors is an integer number (371106978).

Almost surely, 2^989618606 is an apocalyptic number.

989618606 is a deficient number, since it is larger than the sum of its proper divisors (494809306).

989618606 is a wasteful number, since it uses less digits than its factorization.

989618606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494809305.

The product of its (nonzero) digits is 1119744, while the sum is 53.

The square root of 989618606 is about 31458.2041127589. The cubic root of 989618606 is about 996.5274909719.

The spelling of 989618606 in words is "nine hundred eighty-nine million, six hundred eighteen thousand, six hundred six".