64166210 has 16 divisors (see below), whose sum is σ = 115590456. Its totient is φ = 25646208.

The previous prime is 64166147. The next prime is 64166213. The reversal of 64166210 is 1266146.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 55457809 + 8708401 = 7447^2 + 2951^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 64166210.

It is not an unprimeable number, because it can be changed into a prime (64166213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23054 + ... + 25686.

Almost surely, 2^64166210 is an apocalyptic number.

64166210 is a deficient number, since it is larger than the sum of its proper divisors (51424246).

64166210 is a wasteful number, since it uses less digits than its factorization.

64166210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5077.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 64166210 is about 8010.3813891724. The cubic root of 64166210 is about 400.3459715064.

The spelling of 64166210 in words is "sixty-four million, one hundred sixty-six thousand, two hundred ten".