82669121 has 4 divisors (see below), whose sum is σ = 82705200. Its totient is φ = 82633044.

The previous prime is 82669117. The next prime is 82669141. The reversal of 82669121 is 12196628.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 82669121 - 2² = 82669117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82669141) 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, 14351 + ... + 19268.

It is an arithmetic number, because the mean of its divisors is an integer number (20676300).

Almost surely, 2^82669121 is an apocalyptic number.

It is an amenable number.

82669121 is a deficient number, since it is larger than the sum of its proper divisors (36079).

82669121 is a wasteful number, since it uses less digits than its factorization.

82669121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36078.

The product of its digits is 10368, while the sum is 35.

The square root of 82669121 is about 9092.2561006606. The cubic root of 82669121 is about 435.6266495687.

The spelling of 82669121 in words is "eighty-two million, six hundred sixty-nine thousand, one hundred twenty-one".