84569540 has 24 divisors (see below), whose sum is σ = 193741632. Its totient is φ = 30752480.

The previous prime is 84569533. The next prime is 84569567. The reversal of 84569540 is 4596548.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191984 + ... + 192423.

It is an arithmetic number, because the mean of its divisors is an integer number (8072568).

Almost surely, 2^84569540 is an apocalyptic number.

It is an amenable number.

84569540 is an abundant number, since it is smaller than the sum of its proper divisors (109172092).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

84569540 is a wasteful number, since it uses less digits than its factorization.

84569540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384427 (or 384425 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 41.

The square root of 84569540 is about 9196.1698548907. The cubic root of 84569540 is about 438.9394914208.

The spelling of 84569540 in words is "eighty-four million, five hundred sixty-nine thousand, five hundred forty".