83006021 has 8 divisors (see below), whose sum is σ = 95190144. Its totient is φ = 70903440.

The previous prime is 83006009. The next prime is 83006023. The reversal of 83006021 is 12060038.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 83006021 - 2¹⁴ = 82989637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 83005984 and 83006002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83006023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18185 + ... + 22286.

It is an arithmetic number, because the mean of its divisors is an integer number (11898768).

Almost surely, 2^83006021 is an apocalyptic number.

It is an amenable number.

83006021 is a deficient number, since it is larger than the sum of its proper divisors (12184123).

83006021 is a wasteful number, since it uses less digits than its factorization.

83006021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40771.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 83006021 is about 9110.7640184564. The cubic root of 83006021 is about 436.2176146927.

Adding to 83006021 its reverse (12060038), we get a palindrome (95066059).

The spelling of 83006021 in words is "eighty-three million, six thousand, twenty-one".