82897897 has 2 divisors, whose sum is σ = 82897898. Its totient is φ = 82897896.

The previous prime is 82897861. The next prime is 82897907. The reversal of 82897897 is 79879828.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82828201 + 69696 = 9101^2 + 264^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82897897 is a prime.

It is a super-2 number, since 2×82897897² = 13744122654045218, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (82897807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41448948 + 41448949.

It is an arithmetic number, because the mean of its divisors is an integer number (41448949).

Almost surely, 2^82897897 is an apocalyptic number.

It is an amenable number.

82897897 is a deficient number, since it is larger than the sum of its proper divisors (1).

82897897 is an equidigital number, since it uses as much as digits as its factorization.

82897897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4064256, while the sum is 58.

The square root of 82897897 is about 9104.8282246290. The cubic root of 82897897 is about 436.0281260788.

The spelling of 82897897 in words is "eighty-two million, eight hundred ninety-seven thousand, eight hundred ninety-seven".