7297898257 has 32 divisors (see below), whose sum is σ = 8205120000. Its totient is φ = 6448066560.

The previous prime is 7297898219. The next prime is 7297898287. The reversal of 7297898257 is 7528987927.

It is a de Polignac number, because none of the positive numbers 2^k-7297898257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7297898207) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5842369 + ... + 5843617.

It is an arithmetic number, because the mean of its divisors is an integer number (256410000).

Almost surely, 2^7297898257 is an apocalyptic number.

It is an amenable number.

7297898257 is a deficient number, since it is larger than the sum of its proper divisors (907221743).

7297898257 is a wasteful number, since it uses less digits than its factorization.

7297898257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1513.

The product of its digits is 35562240, while the sum is 64.

The square root of 7297898257 is about 85427.7370471675. The cubic root of 7297898257 is about 1939.6912266753.

The spelling of 7297898257 in words is "seven billion, two hundred ninety-seven million, eight hundred ninety-eight thousand, two hundred fifty-seven".