83986651 has 16 divisors (see below), whose sum is σ = 97567488. Its totient is φ = 70812000.

The previous prime is 83986649. The next prime is 83986673. The reversal of 83986651 is 15668938.

It is not a de Polignac number, because 83986651 - 2¹ = 83986649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83986601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 148896 + ... + 149458.

It is an arithmetic number, because the mean of its divisors is an integer number (6097968).

Almost surely, 2^83986651 is an apocalyptic number.

83986651 is a deficient number, since it is larger than the sum of its proper divisors (13580837).

83986651 is a wasteful number, since it uses less digits than its factorization.

83986651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 882.

The product of its digits is 311040, while the sum is 46.

The square root of 83986651 is about 9164.4231133225. The cubic root of 83986651 is about 437.9287134737.

The spelling of 83986651 in words is "eighty-three million, nine hundred eighty-six thousand, six hundred fifty-one".