64027091 has 4 divisors (see below), whose sum is σ = 64314432. Its totient is φ = 63739752.

The previous prime is 64027079. The next prime is 64027133. The reversal of 64027091 is 19072046.

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

It is a cyclic number.

It is not a de Polignac number, because 64027091 - 2⁶ = 64027027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64027001) 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, 143336 + ... + 143781.

It is an arithmetic number, because the mean of its divisors is an integer number (16078608).

Almost surely, 2^64027091 is an apocalyptic number.

64027091 is a deficient number, since it is larger than the sum of its proper divisors (287341).

64027091 is a wasteful number, since it uses less digits than its factorization.

64027091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287340.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 64027091 is about 8001.6930083577. The cubic root of 64027091 is about 400.0564316216.

The spelling of 64027091 in words is "sixty-four million, twenty-seven thousand, ninety-one".