64271487 has 24 divisors (see below), whose sum is σ = 100023600. Its totient is φ = 36602496.

The previous prime is 64271443. The next prime is 64271497. The reversal of 64271487 is 78417246.

It is not a de Polignac number, because 64271487 - 2⁶ = 64271423 is a prime.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64271437) 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 23 ways as a sum of consecutive naturals, for example, 59589 + ... + 60657.

It is an arithmetic number, because the mean of its divisors is an integer number (4167650).

Almost surely, 2^64271487 is an apocalyptic number.

64271487 is a deficient number, since it is larger than the sum of its proper divisors (35752113).

64271487 is a wasteful number, since it uses less digits than its factorization.

64271487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1495 (or 1488 counting only the distinct ones).

The product of its digits is 75264, while the sum is 39.

The square root of 64271487 is about 8016.9499811337. The cubic root of 64271487 is about 400.5648000436.

The spelling of 64271487 in words is "sixty-four million, two hundred seventy-one thousand, four hundred eighty-seven".