66974 has 4 divisors (see below), whose sum is σ = 100464. Its totient is φ = 33486.

The previous prime is 66973. The next prime is 66977. The reversal of 66974 is 47966.

It is a semiprime because it is the product of two primes.

It is a d-powerful number, because it can be written as 6² + 6⁵ + 9⁵ + 7² + 4³ .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 66974.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16742 + ... + 16745.

It is an arithmetic number, because the mean of its divisors is an integer number (25116).

2⁶⁶⁹⁷⁴ is an apocalyptic number.

66974 is a deficient number, since it is larger than the sum of its proper divisors (33490).

66974 is a wasteful number, since it uses less digits than its factorization.

66974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33489.

The product of its digits is 9072, while the sum is 32.

The square root of 66974 is about 258.7933538559. The cubic root of 66974 is about 40.6102265809.

The spelling of 66974 in words is "sixty-six thousand, nine hundred seventy-four".