66532270 has 16 divisors (see below), whose sum is σ = 136866528. Its totient is φ = 22811040.

The previous prime is 66532247. The next prime is 66532289. The reversal of 66532270 is 7223566.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 475161 + ... + 475300.

It is an arithmetic number, because the mean of its divisors is an integer number (8554158).

Almost surely, 2^66532270 is an apocalyptic number.

66532270 is an abundant number, since it is smaller than the sum of its proper divisors (70334258).

66532270 is a wasteful number, since it uses less digits than its factorization.

66532270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 950475.

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 66532270 is about 8156.7315758213. The cubic root of 66532270 is about 405.2074738422.

The spelling of 66532270 in words is "sixty-six million, five hundred thirty-two thousand, two hundred seventy".