83780583 has 4 divisors (see below), whose sum is σ = 111707448. Its totient is φ = 55853720.

The previous prime is 83780581. The next prime is 83780621. The reversal of 83780583 is 38508738.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 83780583 - 2¹ = 83780581 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83780581) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13963428 + ... + 13963433.

It is an arithmetic number, because the mean of its divisors is an integer number (27926862).

Almost surely, 2^83780583 is an apocalyptic number.

83780583 is a deficient number, since it is larger than the sum of its proper divisors (27926865).

83780583 is a wasteful number, since it uses less digits than its factorization.

83780583 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27926864.

The product of its (nonzero) digits is 161280, while the sum is 42.

The square root of 83780583 is about 9153.1733841330. The cubic root of 83780583 is about 437.5702557106.

The spelling of 83780583 in words is "eighty-three million, seven hundred eighty thousand, five hundred eighty-three".