83604740 has 24 divisors (see below), whose sum is σ = 179853912. Its totient is φ = 32625920.

The previous prime is 83604739. The next prime is 83604743. The reversal of 83604740 is 4740638.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 11999296 + 71605444 = 3464^2 + 8462^2 .

It is a super-3 number, since 3×83604740³ (a number of 25 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 83604697 and 83604706.

It is not an unprimeable number, because it can be changed into a prime (83604743) 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, 50159 + ... + 51798.

It is an arithmetic number, because the mean of its divisors is an integer number (7493913).

Almost surely, 2^83604740 is an apocalyptic number.

It is an amenable number.

83604740 is an abundant number, since it is smaller than the sum of its proper divisors (96249172).

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

83604740 is a wasteful number, since it uses less digits than its factorization.

83604740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102007 (or 102005 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 83604740 is about 9143.5627629497. The cubic root of 83604740 is about 437.2639096271.

The spelling of 83604740 in words is "eighty-three million, six hundred four thousand, seven hundred forty".