64217260 has 12 divisors (see below), whose sum is σ = 134856288. Its totient is φ = 25686896.

The previous prime is 64217249. The next prime is 64217261. The reversal of 64217260 is 6271246.

It is not an unprimeable number, because it can be changed into a prime (64217261) 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, 1605412 + ... + 1605451.

It is an arithmetic number, because the mean of its divisors is an integer number (11238024).

Almost surely, 2^64217260 is an apocalyptic number.

It is an amenable number.

64217260 is an abundant number, since it is smaller than the sum of its proper divisors (70639028).

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

64217260 is a wasteful number, since it uses less digits than its factorization.

64217260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3210872 (or 3210870 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 64217260 is about 8013.5672456154. The cubic root of 64217260 is about 400.4521137903.

The spelling of 64217260 in words is "sixty-four million, two hundred seventeen thousand, two hundred sixty".