897188487 has 8 divisors (see below), whose sum is σ = 1288270704. Its totient is φ = 552115968.

The previous prime is 897188471. The next prime is 897188489. The reversal of 897188487 is 784881798.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 897188487 - 2⁴ = 897188471 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 897188487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (897188489) 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, 11502378 + ... + 11502455.

It is an arithmetic number, because the mean of its divisors is an integer number (161033838).

Almost surely, 2^897188487 is an apocalyptic number.

897188487 is a deficient number, since it is larger than the sum of its proper divisors (391082217).

897188487 is a wasteful number, since it uses less digits than its factorization.

897188487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23004849.

The product of its digits is 7225344, while the sum is 60.

The square root of 897188487 is about 29953.1047973328. The cubic root of 897188487 is about 964.4829707281.

The spelling of 897188487 in words is "eight hundred ninety-seven million, one hundred eighty-eight thousand, four hundred eighty-seven".