998774810 has 16 divisors (see below), whose sum is σ = 1961230752. Its totient is φ = 363190800.

The previous prime is 998774809. The next prime is 998774813. The reversal of 998774810 is 18477899.

It is a super-2 number, since 2×998774810² = 1995102242181072200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (998774813) 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, 4539776 + ... + 4539995.

It is an arithmetic number, because the mean of its divisors is an integer number (122576922).

Almost surely, 2^998774810 is an apocalyptic number.

998774810 is a deficient number, since it is larger than the sum of its proper divisors (962455942).

998774810 is a wasteful number, since it uses less digits than its factorization.

998774810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9079789.

The product of its (nonzero) digits is 1016064, while the sum is 53.

The square root of 998774810 is about 31603.3987096325. The cubic root of 998774810 is about 999.5914364319.

The spelling of 998774810 in words is "nine hundred ninety-eight million, seven hundred seventy-four thousand, eight hundred ten".