897904597 has 4 divisors (see below), whose sum is σ = 901661760. Its totient is φ = 894147436.

The previous prime is 897904573. The next prime is 897904621. The reversal of 897904597 is 795409798.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (897904573) and next prime (897904621).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-897904597 is a prime.

It is a super-4 number, since 4×897904597⁴ (a number of 37 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (897904537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1878223 + ... + 1878700.

It is an arithmetic number, because the mean of its divisors is an integer number (225415440).

Almost surely, 2^897904597 is an apocalyptic number.

It is an amenable number.

897904597 is a deficient number, since it is larger than the sum of its proper divisors (3757163).

897904597 is a wasteful number, since it uses less digits than its factorization.

897904597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3757162.

The product of its (nonzero) digits is 5715360, while the sum is 58.

The square root of 897904597 is about 29965.0562655904. The cubic root of 897904597 is about 964.7395099922.

The spelling of 897904597 in words is "eight hundred ninety-seven million, nine hundred four thousand, five hundred ninety-seven".