66130829 has 4 divisors (see below), whose sum is σ = 66240384. Its totient is φ = 66021276.

The previous prime is 66130789. The next prime is 66130847. The reversal of 66130829 is 92803166.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66130829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66130879) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53867 + ... + 55080.

It is an arithmetic number, because the mean of its divisors is an integer number (16560096).

Almost surely, 2^66130829 is an apocalyptic number.

It is an amenable number.

66130829 is a deficient number, since it is larger than the sum of its proper divisors (109555).

66130829 is a wasteful number, since it uses less digits than its factorization.

66130829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109554.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 66130829 is about 8132.0863866538. The cubic root of 66130829 is about 404.3908517731.

The spelling of 66130829 in words is "sixty-six million, one hundred thirty thousand, eight hundred twenty-nine".