66513010 has 32 divisors (see below), whose sum is σ = 132285312. Its totient is φ = 23950080.

The previous prime is 66512989. The next prime is 66513017. The reversal of 66513010 is 1031566.

It is not an unprimeable number, because it can be changed into a prime (66513017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4596 + ... + 12415.

It is an arithmetic number, because the mean of its divisors is an integer number (4133916).

Almost surely, 2^66513010 is an apocalyptic number.

66513010 is a deficient number, since it is larger than the sum of its proper divisors (65772302).

66513010 is a wasteful number, since it uses less digits than its factorization.

66513010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17058.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 66513010 is about 8155.5508704195. The cubic root of 66513010 is about 405.1683697647.

Adding to 66513010 its reverse (1031566), we get a palindrome (67544576).

The spelling of 66513010 in words is "sixty-six million, five hundred thirteen thousand, ten".