897017137 has 4 divisors (see below), whose sum is σ = 916102656. Its totient is φ = 877931620.

The previous prime is 897017083. The next prime is 897017153. The reversal of 897017137 is 731710798.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-897017137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 897017093 and 897017102.

It is not an unprimeable number, because it can be changed into a prime (897017167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9542689 + ... + 9542782.

It is an arithmetic number, because the mean of its divisors is an integer number (229025664).

Almost surely, 2^897017137 is an apocalyptic number.

It is an amenable number.

897017137 is a deficient number, since it is larger than the sum of its proper divisors (19085519).

897017137 is a wasteful number, since it uses less digits than its factorization.

897017137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19085518.

The product of its (nonzero) digits is 74088, while the sum is 43.

The square root of 897017137 is about 29950.2443562653. The cubic root of 897017137 is about 964.4215660618.

The spelling of 897017137 in words is "eight hundred ninety-seven million, seventeen thousand, one hundred thirty-seven".