997627898 has 32 divisors (see below), whose sum is σ = 1710408960. Its totient is φ = 433565440.

The previous prime is 997627871. The next prime is 997627903. The reversal of 997627898 is 898726799.

It is a super-2 number, since 2×997627898² = 1990522845735796808, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 683 + ... + 44673.

It is an arithmetic number, because the mean of its divisors is an integer number (53450280).

Almost surely, 2^997627898 is an apocalyptic number.

997627898 is a deficient number, since it is larger than the sum of its proper divisors (712781062).

997627898 is a wasteful number, since it uses less digits than its factorization.

997627898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44062.

The product of its digits is 27433728, while the sum is 65.

The square root of 997627898 is about 31585.2481073048. The cubic root of 997627898 is about 999.2086733006.

The spelling of 997627898 in words is "nine hundred ninety-seven million, six hundred twenty-seven thousand, eight hundred ninety-eight".