84683840 has 28 divisors (see below), whose sum is σ = 201654156. Its totient is φ = 33873408.

The previous prime is 84683839. The next prime is 84683843. The reversal of 84683840 is 4838648.

It can be written as a sum of positive squares in 2 ways, for example, as 64899136 + 19784704 = 8056^2 + 4448^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84683843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131999 + ... + 132638.

Almost surely, 2^84683840 is an apocalyptic number.

84683840 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

84683840 is an abundant number, since it is smaller than the sum of its proper divisors (116970316).

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

84683840 is a wasteful number, since it uses less digits than its factorization.

84683840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264654 (or 264644 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 41.

The square root of 84683840 is about 9202.3823002525. The cubic root of 84683840 is about 439.1371520207.

The spelling of 84683840 in words is "eighty-four million, six hundred eighty-three thousand, eight hundred forty".