66012929 has 4 divisors (see below), whose sum is σ = 66408384. Its totient is φ = 65617476.

The previous prime is 66012913. The next prime is 66012941. The reversal of 66012929 is 92921066.

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 not a de Polignac number, because 66012929 - 2⁴ = 66012913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66012979) 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, 197477 + ... + 197810.

It is an arithmetic number, because the mean of its divisors is an integer number (16602096).

Almost surely, 2^66012929 is an apocalyptic number.

It is an amenable number.

66012929 is a deficient number, since it is larger than the sum of its proper divisors (395455).

66012929 is a wasteful number, since it uses less digits than its factorization.

66012929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395454.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 66012929 is about 8124.8340906138. The cubic root of 66012929 is about 404.1503888202.

The spelling of 66012929 in words is "sixty-six million, twelve thousand, nine hundred twenty-nine".