83662381 has 4 divisors (see below), whose sum is σ = 91268064. Its totient is φ = 76056700.

The previous prime is 83662379. The next prime is 83662387. The reversal of 83662381 is 18326638.

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 83662381 - 2¹ = 83662379 is a prime.

It is a super-2 number, since 2×83662381² = 13998787989178322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 83662381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83662387) 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, 3802825 + ... + 3802846.

It is an arithmetic number, because the mean of its divisors is an integer number (22817016).

Almost surely, 2^83662381 is an apocalyptic number.

It is an amenable number.

83662381 is a deficient number, since it is larger than the sum of its proper divisors (7605683).

83662381 is a wasteful number, since it uses less digits than its factorization.

83662381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7605682.

The product of its digits is 41472, while the sum is 37.

The square root of 83662381 is about 9146.7142187782. The cubic root of 83662381 is about 437.3643765738.

The spelling of 83662381 in words is "eighty-three million, six hundred sixty-two thousand, three hundred eighty-one".