83866461 has 16 divisors (see below), whose sum is σ = 129065088. Its totient is φ = 47448000.

The previous prime is 83866429. The next prime is 83866477. The reversal of 83866461 is 16466838.

It is a happy number.

It is not a de Polignac number, because 83866461 - 2⁵ = 83866429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83866481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17650 + ... + 21891.

It is an arithmetic number, because the mean of its divisors is an integer number (8066568).

Almost surely, 2^83866461 is an apocalyptic number.

It is an amenable number.

83866461 is a deficient number, since it is larger than the sum of its proper divisors (45198627).

83866461 is a wasteful number, since it uses less digits than its factorization.

83866461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39652.

The product of its digits is 165888, while the sum is 42.

The square root of 83866461 is about 9157.8633425052. The cubic root of 83866461 is about 437.7197128796.

The spelling of 83866461 in words is "eighty-three million, eight hundred sixty-six thousand, four hundred sixty-one".