84057687 has 18 divisors (see below), whose sum is σ = 141240528. Its totient is φ = 48032712.

The previous prime is 84057683. The next prime is 84057719. The reversal of 84057687 is 78675048.

It is not a de Polignac number, because 84057687 - 2² = 84057683 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84057683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 94863 + ... + 95744.

It is an arithmetic number, because the mean of its divisors is an integer number (7846696).

Almost surely, 2^84057687 is an apocalyptic number.

84057687 is a deficient number, since it is larger than the sum of its proper divisors (57182841).

84057687 is a wasteful number, since it uses less digits than its factorization.

84057687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190627 (or 190617 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 45.

The square root of 84057687 is about 9168.2979336407. The cubic root of 84057687 is about 438.0521455399.

The spelling of 84057687 in words is "eighty-four million, fifty-seven thousand, six hundred eighty-seven".