64218892 has 12 divisors (see below), whose sum is σ = 112949200. Its totient is φ = 31947696.

The previous prime is 64218883. The next prime is 64218893. The reversal of 64218892 is 29881246.

It is not an unprimeable number, because it can be changed into a prime (64218893) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39543 + ... + 41134.

Almost surely, 2^64218892 is an apocalyptic number.

It is an amenable number.

64218892 is a deficient number, since it is larger than the sum of its proper divisors (48730308).

64218892 is a wasteful number, since it uses less digits than its factorization.

64218892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80880 (or 80878 counting only the distinct ones).

The product of its digits is 55296, while the sum is 40.

The square root of 64218892 is about 8013.6690722789. The cubic root of 64218892 is about 400.4555060886.

It can be divided in two parts, 64218 and 892, that multiplied together give a triangular number (57282456 = T₁₀₇₀₃).

The spelling of 64218892 in words is "sixty-four million, two hundred eighteen thousand, eight hundred ninety-two".