83684556 has 24 divisors (see below), whose sum is σ = 216960240. Its totient is φ = 27894816.

The previous prime is 83684551. The next prime is 83684561. The reversal of 83684556 is 65548638.

It is an interprime number because it is at equal distance from previous prime (83684551) and next prime (83684561).

It is not an unprimeable number, because it can be changed into a prime (83684551) 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, 387321 + ... + 387536.

It is an arithmetic number, because the mean of its divisors is an integer number (9040010).

Almost surely, 2^83684556 is an apocalyptic number.

It is an amenable number.

83684556 is an abundant number, since it is smaller than the sum of its proper divisors (133275684).

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

83684556 is a wasteful number, since it uses less digits than its factorization.

83684556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774870 (or 774862 counting only the distinct ones).

The product of its digits is 691200, while the sum is 45.

The square root of 83684556 is about 9147.9263223968. The cubic root of 83684556 is about 437.4030148012.

The spelling of 83684556 in words is "eighty-three million, six hundred eighty-four thousand, five hundred fifty-six".