86061661 has 4 divisors (see below), whose sum is σ = 98356192. Its totient is φ = 73767132.

The previous prime is 86061643. The next prime is 86061709. The reversal of 86061661 is 16616068.

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 86061661 - 2¹¹ = 86059613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86061641) 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, 6147255 + ... + 6147268.

It is an arithmetic number, because the mean of its divisors is an integer number (24589048).

Almost surely, 2^86061661 is an apocalyptic number.

It is an amenable number.

86061661 is a deficient number, since it is larger than the sum of its proper divisors (12294531).

86061661 is a wasteful number, since it uses less digits than its factorization.

86061661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12294530.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 86061661 is about 9276.9424381097. The cubic root of 86061661 is about 441.5059640496.

The spelling of 86061661 in words is "eighty-six million, sixty-one thousand, six hundred sixty-one".