83513647 has 4 divisors (see below), whose sum is σ = 95444176. Its totient is φ = 71583120.

The previous prime is 83513627. The next prime is 83513653. The reversal of 83513647 is 74631538.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74631538 = 2 ⋅37315769.

It is not a de Polignac number, because 83513647 - 2⁷ = 83513519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83513627) 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, 5965254 + ... + 5965267.

It is an arithmetic number, because the mean of its divisors is an integer number (23861044).

Almost surely, 2^83513647 is an apocalyptic number.

83513647 is a deficient number, since it is larger than the sum of its proper divisors (11930529).

83513647 is a wasteful number, since it uses less digits than its factorization.

83513647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11930528.

The product of its digits is 60480, while the sum is 37.

The square root of 83513647 is about 9138.5801413568. The cubic root of 83513647 is about 437.1050424124.

The spelling of 83513647 in words is "eighty-three million, five hundred thirteen thousand, six hundred forty-seven".