83865601 has 8 divisors (see below), whose sum is σ = 88401600. Its totient is φ = 79341840.

The previous prime is 83865589. The next prime is 83865611. The reversal of 83865601 is 10656838.

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 83865601 - 2⁷ = 83865473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83865611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13311 + ... + 18571.

It is an arithmetic number, because the mean of its divisors is an integer number (11050200).

Almost surely, 2^83865601 is an apocalyptic number.

83865601 is the 4096-th centered decagonal number.

It is an amenable number.

83865601 is a deficient number, since it is larger than the sum of its proper divisors (4535999).

83865601 is a wasteful number, since it uses less digits than its factorization.

83865601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6119.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 83865601 is about 9157.8163882008. The cubic root of 83865601 is about 437.7182166906.

The spelling of 83865601 in words is "eighty-three million, eight hundred sixty-five thousand, six hundred one".