897143004 has 36 divisors (see below), whose sum is σ = 2290240680. Its totient is φ = 296085600.

The previous prime is 897142943. The next prime is 897143021. The reversal of 897143004 is 400341798.

It is a happy number.

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

It is a super-2 number, since 2×897143004² = 1609731139252288032, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 897143004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 119734 + ... + 127005.

Almost surely, 2^897143004 is an apocalyptic number.

It is an amenable number.

897143004 is an abundant number, since it is smaller than the sum of its proper divisors (1393097676).

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

897143004 is a wasteful number, since it uses less digits than its factorization.

897143004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246850 (or 246845 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 897143004 is about 29952.3455508913. The cubic root of 897143004 is about 964.4666722874.

The spelling of 897143004 in words is "eight hundred ninety-seven million, one hundred forty-three thousand, four".