66434797 has 16 divisors (see below), whose sum is σ = 78317568. Its totient is φ = 55558080.

The previous prime is 66434749. The next prime is 66434807. The reversal of 66434797 is 79743466.

It is a cyclic number.

It is not a de Polignac number, because 66434797 - 2¹¹ = 66432749 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 (66434717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54163 + ... + 55375.

It is an arithmetic number, because the mean of its divisors is an integer number (4894848).

Almost surely, 2^66434797 is an apocalyptic number.

It is an amenable number.

66434797 is a deficient number, since it is larger than the sum of its proper divisors (11882771).

66434797 is a wasteful number, since it uses less digits than its factorization.

66434797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1620.

The product of its digits is 762048, while the sum is 46.

The square root of 66434797 is about 8150.7543822643. The cubic root of 66434797 is about 405.0094942651.

The spelling of 66434797 in words is "sixty-six million, four hundred thirty-four thousand, seven hundred ninety-seven".