84527987 has 2 divisors, whose sum is σ = 84527988. Its totient is φ = 84527986.

The previous prime is 84527983. The next prime is 84528047. The reversal of 84527987 is 78972548.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84527987 - 2² = 84527983 is a prime.

It is not a weakly prime, because it can be changed into another prime (84527983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42263993 + 42263994.

It is an arithmetic number, because the mean of its divisors is an integer number (42263994).

Almost surely, 2^84527987 is an apocalyptic number.

84527987 is a deficient number, since it is larger than the sum of its proper divisors (1).

84527987 is an equidigital number, since it uses as much as digits as its factorization.

84527987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1128960, while the sum is 50.

The square root of 84527987 is about 9193.9103215117. The cubic root of 84527987 is about 438.8675890914.

The spelling of 84527987 in words is "eighty-four million, five hundred twenty-seven thousand, nine hundred eighty-seven".