897998707 has 2 divisors, whose sum is σ = 897998708. Its totient is φ = 897998706.

The previous prime is 897998681. The next prime is 897998711. The reversal of 897998707 is 707899798.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 897998707 - 2¹⁹ = 897474419 is a prime.

It is not a weakly prime, because it can be changed into another prime (897998107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 448999353 + 448999354.

It is an arithmetic number, because the mean of its divisors is an integer number (448999354).

Almost surely, 2^897998707 is an apocalyptic number.

897998707 is a deficient number, since it is larger than the sum of its proper divisors (1).

897998707 is an equidigital number, since it uses as much as digits as its factorization.

897998707 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16003008, while the sum is 64.

The square root of 897998707 is about 29966.6265535512. The cubic root of 897998707 is about 964.7732138191.

The spelling of 897998707 in words is "eight hundred ninety-seven million, nine hundred ninety-eight thousand, seven hundred seven".