83661041 has 4 divisors (see below), whose sum is σ = 83702784. Its totient is φ = 83619300.

The previous prime is 83661037. The next prime is 83661043. The reversal of 83661041 is 14016638.

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, and also an emirpimes, since its reverse is a distinct semiprime: 14016638 = 2 ⋅7008319.

It is a cyclic number.

It is not a de Polignac number, because 83661041 - 2² = 83661037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 83660995 and 83661013.

It is not an unprimeable number, because it can be changed into a prime (83661043) 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, 17705 + ... + 21926.

It is an arithmetic number, because the mean of its divisors is an integer number (20925696).

Almost surely, 2^83661041 is an apocalyptic number.

It is an amenable number.

83661041 is a deficient number, since it is larger than the sum of its proper divisors (41743).

83661041 is a wasteful number, since it uses less digits than its factorization.

83661041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41742.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 83661041 is about 9146.6409681369. The cubic root of 83661041 is about 437.3620415084.

Adding to 83661041 its reverse (14016638), we get a palindrome (97677679).

The spelling of 83661041 in words is "eighty-three million, six hundred sixty-one thousand, forty-one".