64347885 has 64 divisors (see below), whose sum is σ = 131904000. Its totient is φ = 29154816.

The previous prime is 64347827. The next prime is 64347893. The reversal of 64347885 is 58874346.

It is not a de Polignac number, because 64347885 - 2¹⁰ = 64346861 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 64347885.

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 140577 + ... + 141033.

It is an arithmetic number, because the mean of its divisors is an integer number (2061000).

Almost surely, 2^64347885 is an apocalyptic number.

It is an amenable number.

64347885 is an abundant number, since it is smaller than the sum of its proper divisors (67556115).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64347885 is a wasteful number, since it uses less digits than its factorization.

64347885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627 (or 621 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The square root of 64347885 is about 8021.7133456638. The cubic root of 64347885 is about 400.7234511738.

The spelling of 64347885 in words is "sixty-four million, three hundred forty-seven thousand, eight hundred eighty-five".