66379950 has 144 divisors (see below), whose sum is σ = 219631776. Its totient is φ = 13996800.

The previous prime is 66379921. The next prime is 66379969. The reversal of 66379950 is 5997366.

66379950 is a `hidden beast` number, since 6 + 637 + 9 + 9 + 5 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 66379896 and 66379905.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 40140 + ... + 41760.

Almost surely, 2^66379950 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66379950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109815888).

66379950 is an abundant number, since it is smaller than the sum of its proper divisors (153251826).

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

66379950 is a wasteful number, since it uses less digits than its factorization.

66379950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1659 (or 1651 counting only the distinct ones).

The product of its (nonzero) digits is 306180, while the sum is 45.

The square root of 66379950 is about 8147.3891523604. The cubic root of 66379950 is about 404.8980081537.

The spelling of 66379950 in words is "sixty-six million, three hundred seventy-nine thousand, nine hundred fifty".