1697323998 has 64 divisors (see below), whose sum is σ = 3642624000. Its totient is φ = 525675744.

The previous prime is 1697323981. The next prime is 1697324063. The reversal of 1697323998 is 8993237961.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2741733 + ... + 2742351.

It is an arithmetic number, because the mean of its divisors is an integer number (56916000).

Almost surely, 2^1697323998 is an apocalyptic number.

1697323998 is an abundant number, since it is smaller than the sum of its proper divisors (1945300002).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1697323998 is a wasteful number, since it uses less digits than its factorization.

1697323998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1069.

The product of its digits is 4408992, while the sum is 57.

The square root of 1697323998 is about 41198.5921846851. The cubic root of 1697323998 is about 1192.8566349345.

The spelling of 1697323998 in words is "one billion, six hundred ninety-seven million, three hundred twenty-three thousand, nine hundred ninety-eight".