896722657 has 2 divisors, whose sum is σ = 896722658. Its totient is φ = 896722656.

The previous prime is 896722633. The next prime is 896722661. The reversal of 896722657 is 756227698.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 498360976 + 398361681 = 22324^2 + 19959^2 .

It is a cyclic number.

It is not a de Polignac number, because 896722657 - 2¹¹ = 896720609 is a prime.

It is a super-2 number, since 2×896722657² = 1608223047154279298, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (896722627) 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 as a sum of consecutive naturals, namely, 448361328 + 448361329.

It is an arithmetic number, because the mean of its divisors is an integer number (448361329).

Almost surely, 2^896722657 is an apocalyptic number.

It is an amenable number.

896722657 is a deficient number, since it is larger than the sum of its proper divisors (1).

896722657 is an equidigital number, since it uses as much as digits as its factorization.

896722657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2540160, while the sum is 52.

The square root of 896722657 is about 29945.3277991743. The cubic root of 896722657 is about 964.3160184882.

It can be divided in two parts, 89672 and 2657, that added together give a palindrome (92329).

The spelling of 896722657 in words is "eight hundred ninety-six million, seven hundred twenty-two thousand, six hundred fifty-seven".