66343634 has 8 divisors (see below), whose sum is σ = 113731968. Its totient is φ = 28432980.

The previous prime is 66343633. The next prime is 66343637. The reversal of 66343634 is 43634366.

It is a happy number.

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 = 66343594 and 66343603.

It is not an unprimeable number, because it can be changed into a prime (66343631) 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, 2369402 + ... + 2369429.

It is an arithmetic number, because the mean of its divisors is an integer number (14216496).

Almost surely, 2^66343634 is an apocalyptic number.

66343634 is a deficient number, since it is larger than the sum of its proper divisors (47388334).

66343634 is a wasteful number, since it uses less digits than its factorization.

66343634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4738840.

The product of its digits is 93312, while the sum is 35.

The square root of 66343634 is about 8145.1601580325. The cubic root of 66343634 is about 404.8241557408.

The spelling of 66343634 in words is "sixty-six million, three hundred forty-three thousand, six hundred thirty-four".