83745880 has 32 divisors (see below), whose sum is σ = 194509440. Its totient is φ = 32417280.

The previous prime is 83745853. The next prime is 83745889. The reversal of 83745880 is 8854738.

It is a happy number.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83745889) 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, 32529 + ... + 35008.

It is an arithmetic number, because the mean of its divisors is an integer number (6078420).

Almost surely, 2^83745880 is an apocalyptic number.

It is an amenable number.

83745880 is an abundant number, since it is smaller than the sum of its proper divisors (110763560).

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

83745880 is a wasteful number, since it uses less digits than its factorization.

83745880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67579 (or 67575 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 43.

The square root of 83745880 is about 9151.2775064468. The cubic root of 83745880 is about 437.5098316158.

The spelling of 83745880 in words is "eighty-three million, seven hundred forty-five thousand, eight hundred eighty".