84637087 has 2 divisors, whose sum is σ = 84637088. Its totient is φ = 84637086.

The previous prime is 84637061. The next prime is 84637097. The reversal of 84637087 is 78073648.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 84637087 - 2¹⁹ = 84112799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84637097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42318543 + 42318544.

It is an arithmetic number, because the mean of its divisors is an integer number (42318544).

Almost surely, 2^84637087 is an apocalyptic number.

84637087 is a deficient number, since it is larger than the sum of its proper divisors (1).

84637087 is an equidigital number, since it uses as much as digits as its factorization.

84637087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 225792, while the sum is 43.

The square root of 84637087 is about 9199.8416834204. The cubic root of 84637087 is about 439.0563229088.

The spelling of 84637087 in words is "eighty-four million, six hundred thirty-seven thousand, eighty-seven".