83087790 has 16 divisors (see below), whose sum is σ = 199410768. Its totient is φ = 22156736.

The previous prime is 83087773. The next prime is 83087801. The reversal of 83087790 is 9778038.

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, 1384767 + ... + 1384826.

It is an arithmetic number, because the mean of its divisors is an integer number (12463173).

Almost surely, 2^83087790 is an apocalyptic number.

83087790 is an abundant number, since it is smaller than the sum of its proper divisors (116322978).

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

83087790 is a wasteful number, since it uses less digits than its factorization.

83087790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2769603.

The product of its (nonzero) digits is 84672, while the sum is 42.

The square root of 83087790 is about 9115.2504079702. The cubic root of 83087790 is about 436.3608066025.

The spelling of 83087790 in words is "eighty-three million, eighty-seven thousand, seven hundred ninety".