86640141 has 16 divisors (see below), whose sum is σ = 135094784. Its totient is φ = 48356784.

The previous prime is 86640137. The next prime is 86640161. The reversal of 86640141 is 14104668.

It is not a de Polignac number, because 86640141 - 2² = 86640137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 86640099 and 86640108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86640121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47071 + ... + 48876.

It is an arithmetic number, because the mean of its divisors is an integer number (8443424).

Almost surely, 2^86640141 is an apocalyptic number.

It is an amenable number.

86640141 is a deficient number, since it is larger than the sum of its proper divisors (48454643).

86640141 is a wasteful number, since it uses less digits than its factorization.

86640141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96000.

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 86640141 is about 9308.0685966531. The cubic root of 86640141 is about 442.4929782792.

The spelling of 86640141 in words is "eighty-six million, six hundred forty thousand, one hundred forty-one".