83351681 has 8 divisors (see below), whose sum is σ = 96821184. Its totient is φ = 70272720.

The previous prime is 83351677. The next prime is 83351687. The reversal of 83351681 is 18615338.

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

It is not a de Polignac number, because 83351681 - 2² = 83351677 is a prime.

It is a super-2 number, since 2×83351681² = 13895005451051522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83351687) 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, 97175 + ... + 98028.

It is an arithmetic number, because the mean of its divisors is an integer number (12102648).

Almost surely, 2^83351681 is an apocalyptic number.

It is an amenable number.

83351681 is a deficient number, since it is larger than the sum of its proper divisors (13469503).

83351681 is a wasteful number, since it uses less digits than its factorization.

83351681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195271.

The product of its digits is 17280, while the sum is 35.

The square root of 83351681 is about 9129.7141795349. The cubic root of 83351681 is about 436.8222863421.

The spelling of 83351681 in words is "eighty-three million, three hundred fifty-one thousand, six hundred eighty-one".