66345634 has 8 divisors (see below), whose sum is σ = 100074960. Its totient is φ = 32987316.

The previous prime is 66345607. The next prime is 66345637. The reversal of 66345634 is 43654366.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 66345593 and 66345602.

It is not an unprimeable number, because it can be changed into a prime (66345637) 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, 92304 + ... + 93019.

It is an arithmetic number, because the mean of its divisors is an integer number (12509370).

Almost surely, 2^66345634 is an apocalyptic number.

66345634 is a deficient number, since it is larger than the sum of its proper divisors (33729326).

66345634 is a wasteful number, since it uses less digits than its factorization.

66345634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185504.

The product of its digits is 155520, while the sum is 37.

The square root of 66345634 is about 8145.2829294015. The cubic root of 66345634 is about 404.8282236527.

The spelling of 66345634 in words is "sixty-six million, three hundred forty-five thousand, six hundred thirty-four".