83781027 has 16 divisors (see below), whose sum is σ = 135404160. Its totient is φ = 50776200.

The previous prime is 83781007. The next prime is 83781041. The reversal of 83781027 is 72018738.

It is not a de Polignac number, because 83781027 - 2¹⁰ = 83780003 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 83780982 and 83781000.

It is not an unprimeable number, because it can be changed into a prime (83781007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140749 + ... + 141342.

It is an arithmetic number, because the mean of its divisors is an integer number (8462760).

Almost surely, 2^83781027 is an apocalyptic number.

83781027 is a deficient number, since it is larger than the sum of its proper divisors (51623133).

83781027 is a wasteful number, since it uses less digits than its factorization.

83781027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282111 (or 282105 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 36.

The square root of 83781027 is about 9153.1976379842. The cubic root of 83781027 is about 437.5710286855.

The spelling of 83781027 in words is "eighty-three million, seven hundred eighty-one thousand, twenty-seven".