64466887 has 4 divisors (see below), whose sum is σ = 66546496. Its totient is φ = 62387280.

The previous prime is 64466863. The next prime is 64466891. The reversal of 64466887 is 78866446.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78866446 = 2 ⋅39433223.

It is a cyclic number.

It is not a de Polignac number, because 64466887 - 2²³ = 56078279 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64466887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64466807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1039758 + ... + 1039819.

It is an arithmetic number, because the mean of its divisors is an integer number (16636624).

Almost surely, 2^64466887 is an apocalyptic number.

64466887 is a deficient number, since it is larger than the sum of its proper divisors (2079609).

64466887 is a wasteful number, since it uses less digits than its factorization.

64466887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2079608.

The product of its digits is 1548288, while the sum is 49.

The square root of 64466887 is about 8029.1274121165. The cubic root of 64466887 is about 400.9703255177.

The spelling of 64466887 in words is "sixty-four million, four hundred sixty-six thousand, eight hundred eighty-seven".