84698657 has 2 divisors, whose sum is σ = 84698658. Its totient is φ = 84698656.

The previous prime is 84698639. The next prime is 84698681. The reversal of 84698657 is 75689648.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45711121 + 38987536 = 6761^2 + 6244^2 .

It is a cyclic number.

It is not a de Polignac number, because 84698657 - 2⁸ = 84698401 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 84698599 and 84698608.

It is not a weakly prime, because it can be changed into another prime (84698687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42349328 + 42349329.

It is an arithmetic number, because the mean of its divisors is an integer number (42349329).

Almost surely, 2^84698657 is an apocalyptic number.

It is an amenable number.

84698657 is a deficient number, since it is larger than the sum of its proper divisors (1).

84698657 is an equidigital number, since it uses as much as digits as its factorization.

84698657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2903040, while the sum is 53.

The square root of 84698657 is about 9203.1873283119. The cubic root of 84698657 is about 439.1627622423.

Subtracting from 84698657 its reverse (75689648), we obtain a palindrome (9009009).

The spelling of 84698657 in words is "eighty-four million, six hundred ninety-eight thousand, six hundred fifty-seven".