84607613 has 2 divisors, whose sum is σ = 84607614. Its totient is φ = 84607612.

The previous prime is 84607603. The next prime is 84607631. The reversal of 84607613 is 31670648.

Together with next prime (84607631) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45131524 + 39476089 = 6718^2 + 6283^2 .

It is a cyclic number.

It is not a de Polignac number, because 84607613 - 2⁴ = 84607597 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84607603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42303806 + 42303807.

It is an arithmetic number, because the mean of its divisors is an integer number (42303807).

Almost surely, 2^84607613 is an apocalyptic number.

It is an amenable number.

84607613 is a deficient number, since it is larger than the sum of its proper divisors (1).

84607613 is an equidigital number, since it uses as much as digits as its factorization.

84607613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 84607613 is about 9198.2396685453. The cubic root of 84607613 is about 439.0053513668.

The spelling of 84607613 in words is "eighty-four million, six hundred seven thousand, six hundred thirteen".