83719649 has 16 divisors (see below), whose sum is σ = 92100288. Its totient is φ = 75632832.

The previous prime is 83719631. The next prime is 83719651. The reversal of 83719649 is 94691738.

It is a cyclic number.

It is not a de Polignac number, because 83719649 - 2¹² = 83715553 is a prime.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83713649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 241094 + ... + 241440.

It is an arithmetic number, because the mean of its divisors is an integer number (5756268).

Almost surely, 2^83719649 is an apocalyptic number.

It is an amenable number.

83719649 is a deficient number, since it is larger than the sum of its proper divisors (8380639).

83719649 is a wasteful number, since it uses less digits than its factorization.

83719649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704.

The product of its digits is 326592, while the sum is 47.

The square root of 83719649 is about 9149.8442063240. The cubic root of 83719649 is about 437.4641477015.

The spelling of 83719649 in words is "eighty-three million, seven hundred nineteen thousand, six hundred forty-nine".