66047634 has 24 divisors (see below), whose sum is σ = 144917760. Its totient is φ = 21736728.

The previous prime is 66047623. The next prime is 66047647. The reversal of 66047634 is 43674066.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21802 + ... + 24645.

It is an arithmetic number, because the mean of its divisors is an integer number (6038240).

Almost surely, 2^66047634 is an apocalyptic number.

66047634 is an abundant number, since it is smaller than the sum of its proper divisors (78870126).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66047634 is a wasteful number, since it uses less digits than its factorization.

66047634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46534 (or 46531 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 36.

The square root of 66047634 is about 8126.9695459009. The cubic root of 66047634 is about 404.2212011202.

The spelling of 66047634 in words is "sixty-six million, forty-seven thousand, six hundred thirty-four".