9900557 has 8 divisors (see below), whose sum is σ = 10584000. Its totient is φ = 9238240.

The previous prime is 9900547. The next prime is 9900589. The reversal of 9900557 is 7550099.

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 9900557 - 2⁶ = 9900493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9900547) 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, 4307 + ... + 6192.

It is an arithmetic number, because the mean of its divisors is an integer number (1323000).

Almost surely, 2^9900557 is an apocalyptic number.

It is an amenable number.

9900557 is a deficient number, since it is larger than the sum of its proper divisors (683443).

9900557 is a wasteful number, since it uses less digits than its factorization.

9900557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10563.

The product of its (nonzero) digits is 14175, while the sum is 35.

The square root of 9900557 is about 3146.5150563759. The cubic root of 9900557 is about 214.7269437848.

The spelling of 9900557 in words is "nine million, nine hundred thousand, five hundred fifty-seven".