66229429 has 6 divisors (see below), whose sum is σ = 77042454. Its totient is φ = 56768040.

The previous prime is 66229411. The next prime is 66229477. The reversal of 66229429 is 92492266.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 57790404 + 8439025 = 7602^2 + 2905^2 .

It is not a de Polignac number, because 66229429 - 2⁹ = 66228917 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66229391 and 66229400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66229409) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 675762 + ... + 675859.

It is an arithmetic number, because the mean of its divisors is an integer number (12840409).

Almost surely, 2^66229429 is an apocalyptic number.

It is an amenable number.

66229429 is a deficient number, since it is larger than the sum of its proper divisors (10813025).

66229429 is a wasteful number, since it uses less digits than its factorization.

66229429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1351635 (or 1351628 counting only the distinct ones).

The product of its digits is 93312, while the sum is 40.

The square root of 66229429 is about 8138.1465334559. The cubic root of 66229429 is about 404.5917320501.

The spelling of 66229429 in words is "sixty-six million, two hundred twenty-nine thousand, four hundred twenty-nine".