86737661 has 4 divisors (see below), whose sum is σ = 86879772. Its totient is φ = 86595552.

The previous prime is 86737619. The next prime is 86737667. The reversal of 86737661 is 16673768.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 43309561 + 43428100 = 6581^2 + 6590^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86737661 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 (86737667) 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, 70136 + ... + 71361.

It is an arithmetic number, because the mean of its divisors is an integer number (21719943).

Almost surely, 2^86737661 is an apocalyptic number.

It is an amenable number.

86737661 is a deficient number, since it is larger than the sum of its proper divisors (142111).

86737661 is a wasteful number, since it uses less digits than its factorization.

86737661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142110.

The product of its digits is 254016, while the sum is 44.

The square root of 86737661 is about 9313.3055893168. The cubic root of 86737661 is about 442.6589357466.

The spelling of 86737661 in words is "eighty-six million, seven hundred thirty-seven thousand, six hundred sixty-one".