83712901 has 4 divisors (see below), whose sum is σ = 83731212. Its totient is φ = 83694592.

The previous prime is 83712899. The next prime is 83712911. The reversal of 83712901 is 10921738.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 10921738 = 2 ⋅5460869.

It can be written as a sum of positive squares in 2 ways, for example, as 82992100 + 720801 = 9110^2 + 849^2 .

It is a cyclic number.

It is not a de Polignac number, because 83712901 - 2¹ = 83712899 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 (83712911) 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, 4101 + ... + 13573.

It is an arithmetic number, because the mean of its divisors is an integer number (20932803).

Almost surely, 2^83712901 is an apocalyptic number.

It is an amenable number.

83712901 is a deficient number, since it is larger than the sum of its proper divisors (18311).

83712901 is an equidigital number, since it uses as much as digits as its factorization.

83712901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18310.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 83712901 is about 9149.4754494452. The cubic root of 83712901 is about 437.4523938404.

The spelling of 83712901 in words is "eighty-three million, seven hundred twelve thousand, nine hundred one".