66950 has 24 divisors (see below), whose sum is σ = 135408. Its totient is φ = 24480.

The previous prime is 66949. The next prime is 66959. The reversal of 66950 is 5966.

It is a Harshad number since it is a multiple of its sum of digits (26).

66950 is a Rhonda number in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66959) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 599 + ... + 701.

It is an arithmetic number, because the mean of its divisors is an integer number (5642).

2⁶⁶⁹⁵⁰ is an apocalyptic number.

66950 is an abundant number, since it is smaller than the sum of its proper divisors (68458).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67704).

66950 is a wasteful number, since it uses less digits than its factorization.

66950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128 (or 123 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 66950 is about 258.7469806587. The cubic root of 66950 is about 40.6053751367.

The spelling of 66950 in words is "sixty-six thousand, nine hundred fifty".