84612257 has 2 divisors, whose sum is σ = 84612258. Its totient is φ = 84612256.

The previous prime is 84612181. The next prime is 84612271. The reversal of 84612257 is 75221648.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84070561 + 541696 = 9169^2 + 736^2 .

It is a cyclic number.

It is not a de Polignac number, because 84612257 - 2⁸ = 84612001 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (84612277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42306128 + 42306129.

It is an arithmetic number, because the mean of its divisors is an integer number (42306129).

Almost surely, 2^84612257 is an apocalyptic number.

It is an amenable number.

84612257 is a deficient number, since it is larger than the sum of its proper divisors (1).

84612257 is an equidigital number, since it uses as much as digits as its factorization.

84612257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26880, while the sum is 35.

The square root of 84612257 is about 9198.4921046876. The cubic root of 84612257 is about 439.0133833609.

The spelling of 84612257 in words is "eighty-four million, six hundred twelve thousand, two hundred fifty-seven".