64085791 has 16 divisors (see below), whose sum is σ = 80110080. Its totient is φ = 49805280.

The previous prime is 64085779. The next prime is 64085837. The reversal of 64085791 is 19758046.

It is not a de Polignac number, because 64085791 - 2⁷ = 64085663 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 (64085731) 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, 36645 + ... + 38353.

It is an arithmetic number, because the mean of its divisors is an integer number (5006880).

Almost surely, 2^64085791 is an apocalyptic number.

64085791 is a deficient number, since it is larger than the sum of its proper divisors (16024289).

64085791 is a wasteful number, since it uses less digits than its factorization.

64085791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2214.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 64085791 is about 8005.3601418050. The cubic root of 64085791 is about 400.1786514473.

The spelling of 64085791 in words is "sixty-four million, eighty-five thousand, seven hundred ninety-one".