66742134 has 8 divisors (see below), whose sum is σ = 133484280. Its totient is φ = 22247376.

The previous prime is 66742103. The next prime is 66742141. The reversal of 66742134 is 43124766.

It is a happy number.

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

66742134 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 66742095 and 66742104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5561839 + ... + 5561850.

It is an arithmetic number, because the mean of its divisors is an integer number (16685535).

Almost surely, 2^66742134 is an apocalyptic number.

66742134 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

66742134 is a wasteful number, since it uses less digits than its factorization.

66742134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11123694.

The product of its digits is 24192, while the sum is 33.

The square root of 66742134 is about 8169.5859136189. The cubic root of 66742134 is about 405.6330778628.

The spelling of 66742134 in words is "sixty-six million, seven hundred forty-two thousand, one hundred thirty-four".