83666237 has 4 divisors (see below), whose sum is σ = 83685120. Its totient is φ = 83647356.

The previous prime is 83666221. The next prime is 83666239. The reversal of 83666237 is 73266638.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 83666237 - 2⁴ = 83666221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 83666194 and 83666203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83666239) 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, 1214 + ... + 12992.

It is an arithmetic number, because the mean of its divisors is an integer number (20921280).

Almost surely, 2^83666237 is an apocalyptic number.

It is an amenable number.

83666237 is a deficient number, since it is larger than the sum of its proper divisors (18883).

83666237 is a wasteful number, since it uses less digits than its factorization.

83666237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18882.

The product of its digits is 217728, while the sum is 41.

The square root of 83666237 is about 9146.9250024257. The cubic root of 83666237 is about 437.3710958468.

The spelling of 83666237 in words is "eighty-three million, six hundred sixty-six thousand, two hundred thirty-seven".