83061681 has 8 divisors (see below), whose sum is σ = 113324640. Its totient is φ = 54086592.

The previous prime is 83061631. The next prime is 83061697. The reversal of 83061681 is 18616038.

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

It is not a de Polignac number, because 83061681 - 2¹³ = 83053489 is a prime.

It is a super-2 number, since 2×83061681² = 13798485701091522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (83061611) 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, 321816 + ... + 322073.

It is an arithmetic number, because the mean of its divisors is an integer number (14165580).

Almost surely, 2^83061681 is an apocalyptic number.

It is an amenable number.

83061681 is a deficient number, since it is larger than the sum of its proper divisors (30262959).

83061681 is a wasteful number, since it uses less digits than its factorization.

83061681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643935.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 83061681 is about 9113.8181351177. The cubic root of 83061681 is about 436.3150953620.

The spelling of 83061681 in words is "eighty-three million, sixty-one thousand, six hundred eighty-one".