897801988 has 24 divisors (see below), whose sum is σ = 1617980672. Its totient is φ = 435655584.

The previous prime is 897801979. The next prime is 897802013. The reversal of 897801988 is 889108798.

It is a super-5 number, since 5×897801988⁵ (a number of 46 digits) contains 55555 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10381 + ... + 43627.

Almost surely, 2^897801988 is an apocalyptic number.

It is an amenable number.

897801988 is a deficient number, since it is larger than the sum of its proper divisors (720178684).

897801988 is a wasteful number, since it uses less digits than its factorization.

897801988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33451 (or 33449 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 58.

The square root of 897801988 is about 29963.3440723828. The cubic root of 897801988 is about 964.7027597154.

The spelling of 897801988 in words is "eight hundred ninety-seven million, eight hundred one thousand, nine hundred eighty-eight".