998925697 has 32 divisors (see below), whose sum is σ = 1264564224. Its totient is φ = 766521600.

The previous prime is 998925689. The next prime is 998925727. The reversal of 998925697 is 796529899.

It is a cyclic number.

It is not a de Polignac number, because 998925697 - 2³ = 998925689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (998925197) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1684233 + ... + 1684825.

It is an arithmetic number, because the mean of its divisors is an integer number (39517632).

Almost surely, 2^998925697 is an apocalyptic number.

It is an amenable number.

998925697 is a deficient number, since it is larger than the sum of its proper divisors (265638527).

998925697 is a wasteful number, since it uses less digits than its factorization.

998925697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909.

The product of its digits is 22044960, while the sum is 64.

The square root of 998925697 is about 31605.7858152586. The cubic root of 998925697 is about 999.6417706871.

The spelling of 998925697 in words is "nine hundred ninety-eight million, nine hundred twenty-five thousand, six hundred ninety-seven".