9890618 has 8 divisors (see below), whose sum is σ = 15237012. Its totient is φ = 4811616.

The previous prime is 9890609. The next prime is 9890623. The reversal of 9890618 is 8160989.

It can be written as a sum of positive squares in 2 ways, for example, as 9653449 + 237169 = 3107^2 + 487^2 .

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

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, 66755 + ... + 66902.

Almost surely, 2^9890618 is an apocalyptic number.

9890618 is a deficient number, since it is larger than the sum of its proper divisors (5346394).

9890618 is a wasteful number, since it uses less digits than its factorization.

9890618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133696.

The product of its (nonzero) digits is 31104, while the sum is 41.

The square root of 9890618 is about 3144.9352934520. The cubic root of 9890618 is about 214.6550661572.

The spelling of 9890618 in words is "nine million, eight hundred ninety thousand, six hundred eighteen".