84700013 has 2 divisors, whose sum is σ = 84700014. Its totient is φ = 84700012.

The previous prime is 84700003. The next prime is 84700019. The reversal of 84700013 is 31000748.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42994249 + 41705764 = 6557^2 + 6458^2 .

It is a cyclic number.

It is not a de Polignac number, because 84700013 - 2⁴ = 84699997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84700019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42350006 + 42350007.

It is an arithmetic number, because the mean of its divisors is an integer number (42350007).

Almost surely, 2^84700013 is an apocalyptic number.

It is an amenable number.

84700013 is a deficient number, since it is larger than the sum of its proper divisors (1).

84700013 is an equidigital number, since it uses as much as digits as its factorization.

84700013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 84700013 is about 9203.2609981463. The cubic root of 84700013 is about 439.1651058510.

The spelling of 84700013 in words is "eighty-four million, seven hundred thousand, thirteen".