84694987 has 8 divisors (see below), whose sum is σ = 93151296. Its totient is φ = 76516032.

The previous prime is 84694979. The next prime is 84694991. The reversal of 84694987 is 78949648.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 84694987 - 2³ = 84694979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84694957) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68698 + ... + 69919.

It is an arithmetic number, because the mean of its divisors is an integer number (11643912).

Almost surely, 2^84694987 is an apocalyptic number.

84694987 is a deficient number, since it is larger than the sum of its proper divisors (8456309).

84694987 is a wasteful number, since it uses less digits than its factorization.

84694987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138677.

The product of its digits is 3483648, while the sum is 55.

The square root of 84694987 is about 9202.9879387077. The cubic root of 84694987 is about 439.1564191641.

It can be divided in two parts, 8469 and 4987, that added together give a square (13456 = 116²).

The spelling of 84694987 in words is "eighty-four million, six hundred ninety-four thousand, nine hundred eighty-seven".