84683640 has 64 divisors (see below), whose sum is σ = 256037760. Its totient is φ = 22405760.

The previous prime is 84683629. The next prime is 84683653. The reversal of 84683640 is 4638648.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13027 + ... + 18413.

It is an arithmetic number, because the mean of its divisors is an integer number (4000590).

Almost surely, 2^84683640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84683640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128018880).

84683640 is an abundant number, since it is smaller than the sum of its proper divisors (171354120).

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

84683640 is a wasteful number, since it uses less digits than its factorization.

84683640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5532 (or 5528 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 39.

The square root of 84683640 is about 9202.3714334947. The cubic root of 84683640 is about 439.1368063133.

The spelling of 84683640 in words is "eighty-four million, six hundred eighty-three thousand, six hundred forty".