897989667 has 48 divisors (see below), whose sum is σ = 1320351648. Its totient is φ = 542108160.

The previous prime is 897989663. The next prime is 897989671. The reversal of 897989667 is 766989798.

It is an interprime number because it is at equal distance from previous prime (897989663) and next prime (897989671).

It is not a de Polignac number, because 897989667 - 2² = 897989663 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (69).

It is not an unprimeable number, because it can be changed into a prime (897989663) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2407293 + ... + 2407665.

It is an arithmetic number, because the mean of its divisors is an integer number (27507326).

Almost surely, 2^897989667 is an apocalyptic number.

897989667 is a deficient number, since it is larger than the sum of its proper divisors (422361981).

897989667 is a wasteful number, since it uses less digits than its factorization.

897989667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500 (or 477 counting only the distinct ones).

The product of its digits is 82301184, while the sum is 69.

The square root of 897989667 is about 29966.4757187094. The cubic root of 897989667 is about 964.7699764057.

The spelling of 897989667 in words is "eight hundred ninety-seven million, nine hundred eighty-nine thousand, six hundred sixty-seven".