897848778 has 16 divisors (see below), whose sum is σ = 1901327040. Its totient is φ = 281678016.

The previous prime is 897848767. The next prime is 897848801. The reversal of 897848778 is 877848798.

It is a super-2 number, since 2×897848778² = 1612264856312186568, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4401118 + ... + 4401321.

It is an arithmetic number, because the mean of its divisors is an integer number (118832940).

Almost surely, 2^897848778 is an apocalyptic number.

897848778 is an abundant number, since it is smaller than the sum of its proper divisors (1003478262).

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

897848778 is a wasteful number, since it uses less digits than its factorization.

897848778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8802461.

The product of its digits is 50577408, while the sum is 66.

The square root of 897848778 is about 29964.1248495597. The cubic root of 897848778 is about 964.7195182949.

The spelling of 897848778 in words is "eight hundred ninety-seven million, eight hundred forty-eight thousand, seven hundred seventy-eight".