86211601 has 4 divisors (see below), whose sum is σ = 98527552. Its totient is φ = 73895652.

The previous prime is 86211533. The next prime is 86211617. The reversal of 86211601 is 10611268.

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 86211601 - 2⁹ = 86211089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86211661) 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, 6157965 + ... + 6157978.

It is an arithmetic number, because the mean of its divisors is an integer number (24631888).

Almost surely, 2^86211601 is an apocalyptic number.

It is an amenable number.

86211601 is a deficient number, since it is larger than the sum of its proper divisors (12315951).

86211601 is a wasteful number, since it uses less digits than its factorization.

86211601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12315950.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 86211601 is about 9285.0202476893. The cubic root of 86211601 is about 441.7622182886.

Adding to 86211601 its reverse (10611268), we get a palindrome (96822869).

The spelling of 86211601 in words is "eighty-six million, two hundred eleven thousand, six hundred one".