66941329 has 16 divisors (see below), whose sum is σ = 82913152. Its totient is φ = 52627968.

The previous prime is 66941327. The next prime is 66941353. The reversal of 66941329 is 92314966.

It is a cyclic number.

It is not a de Polignac number, because 66941329 - 2¹ = 66941327 is a prime.

It is a super-2 number, since 2×66941329² = 8962283056572482, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 66941291 and 66941300.

It is not an unprimeable number, because it can be changed into a prime (66941321) 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, 12577 + ... + 17089.

It is an arithmetic number, because the mean of its divisors is an integer number (5182072).

Almost surely, 2^66941329 is an apocalyptic number.

It is an amenable number.

66941329 is a deficient number, since it is larger than the sum of its proper divisors (15971823).

66941329 is a wasteful number, since it uses less digits than its factorization.

66941329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4696.

The product of its digits is 69984, while the sum is 40.

The square root of 66941329 is about 8181.7680852002. The cubic root of 66941329 is about 406.0362206517.

The spelling of 66941329 in words is "sixty-six million, nine hundred forty-one thousand, three hundred twenty-nine".