64797271 has 16 divisors (see below), whose sum is σ = 81335808. Its totient is φ = 50148000.

The previous prime is 64797253. The next prime is 64797283. The reversal of 64797271 is 17279746.

It is not a de Polignac number, because 64797271 - 2²¹ = 62700119 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 (64797211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8841 + ... + 14413.

It is an arithmetic number, because the mean of its divisors is an integer number (5083488).

Almost surely, 2^64797271 is an apocalyptic number.

64797271 is a deficient number, since it is larger than the sum of its proper divisors (16538537).

64797271 is a wasteful number, since it uses less digits than its factorization.

64797271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5742.

The product of its digits is 148176, while the sum is 43.

The square root of 64797271 is about 8049.6752108393. The cubic root of 64797271 is about 401.6541314438.

The spelling of 64797271 in words is "sixty-four million, seven hundred ninety-seven thousand, two hundred seventy-one".