66126629 has 4 divisors (see below), whose sum is σ = 66360576. Its totient is φ = 65892684.

The previous prime is 66126611. The next prime is 66126637. The reversal of 66126629 is 92662166.

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 66126629 - 2¹² = 66122533 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 66126592 and 66126601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66126029) 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, 116549 + ... + 117114.

It is an arithmetic number, because the mean of its divisors is an integer number (16590144).

Almost surely, 2^66126629 is an apocalyptic number.

It is an amenable number.

66126629 is a deficient number, since it is larger than the sum of its proper divisors (233947).

66126629 is a wasteful number, since it uses less digits than its factorization.

66126629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233946.

The product of its digits is 46656, while the sum is 38.

The square root of 66126629 is about 8131.8281462412. The cubic root of 66126629 is about 404.3822905742.

The spelling of 66126629 in words is "sixty-six million, one hundred twenty-six thousand, six hundred twenty-nine".