83875640 has 32 divisors (see below), whose sum is σ = 188984880. Its totient is φ = 33503232.

The previous prime is 83875619. The next prime is 83875657. The reversal of 83875640 is 4657838.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47819 + ... + 49541.

Almost surely, 2^83875640 is an apocalyptic number.

It is an amenable number.

83875640 is an abundant number, since it is smaller than the sum of its proper divisors (105109240).

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

83875640 is a wasteful number, since it uses less digits than its factorization.

83875640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2951 (or 2947 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 83875640 is about 9158.3644828102. The cubic root of 83875640 is about 437.7356814509.

The spelling of 83875640 in words is "eighty-three million, eight hundred seventy-five thousand, six hundred forty".