897878742 has 16 divisors (see below), whose sum is σ = 1796098752. Its totient is φ = 299236040.

The previous prime is 897878731. The next prime is 897878747. The reversal of 897878742 is 247878798.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (897878747) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31093 + ... + 52559.

It is an arithmetic number, because the mean of its divisors is an integer number (112256172).

Almost surely, 2^897878742 is an apocalyptic number.

897878742 is an abundant number, since it is smaller than the sum of its proper divisors (898220010).

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

897878742 is a wasteful number, since it uses less digits than its factorization.

897878742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28443.

The product of its digits is 12644352, while the sum is 60.

The square root of 897878742 is about 29964.6248433048. The cubic root of 897878742 is about 964.7302500702.

The spelling of 897878742 in words is "eight hundred ninety-seven million, eight hundred seventy-eight thousand, seven hundred forty-two".