897865740 has 36 divisors (see below), whose sum is σ = 2723526624. Its totient is φ = 239430816.

The previous prime is 897865687. The next prime is 897865799. The reversal of 897865740 is 47568798.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2493892 + ... + 2494251.

Almost surely, 2^897865740 is an apocalyptic number.

It is an amenable number.

897865740 is an abundant number, since it is smaller than the sum of its proper divisors (1825660884).

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

897865740 is a wasteful number, since it uses less digits than its factorization.

897865740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4988158 (or 4988153 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 54.

The square root of 897865740 is about 29964.4078866912. The cubic root of 897865740 is about 964.7255933600.

The spelling of 897865740 in words is "eight hundred ninety-seven million, eight hundred sixty-five thousand, seven hundred forty".