66532319 has 16 divisors (see below), whose sum is σ = 80398080. Its totient is φ = 53784000.

The previous prime is 66532289. The next prime is 66532337. The reversal of 66532319 is 91323566.

It is a cyclic number.

It is not a de Polignac number, because 66532319 - 2²⁴ = 49755103 is a prime.

It is a super-2 number, since 2×66532319² = 8853098943035522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66532369) 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, 32387 + ... + 34379.

It is an arithmetic number, because the mean of its divisors is an integer number (5024880).

Almost surely, 2^66532319 is an apocalyptic number.

66532319 is a deficient number, since it is larger than the sum of its proper divisors (13865761).

66532319 is a wasteful number, since it uses less digits than its factorization.

66532319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2270.

The product of its digits is 29160, while the sum is 35.

The square root of 66532319 is about 8156.7345794748. The cubic root of 66532319 is about 405.2075733186.

The spelling of 66532319 in words is "sixty-six million, five hundred thirty-two thousand, three hundred nineteen".