66983429 has 8 divisors (see below), whose sum is σ = 71043072. Its totient is φ = 63019440.

The previous prime is 66983419. The next prime is 66983437. The reversal of 66983429 is 92438966.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66983429 - 2²⁴ = 50206213 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 (66983419) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22469 + ... + 25274.

It is an arithmetic number, because the mean of its divisors is an integer number (8880384).

Almost surely, 2^66983429 is an apocalyptic number.

It is an amenable number.

66983429 is a deficient number, since it is larger than the sum of its proper divisors (4059643).

66983429 is a wasteful number, since it uses less digits than its factorization.

66983429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47827.

The product of its digits is 559872, while the sum is 47.

The square root of 66983429 is about 8184.3404743449. The cubic root of 66983429 is about 406.1213227495.

The spelling of 66983429 in words is "sixty-six million, nine hundred eighty-three thousand, four hundred twenty-nine".