66374208 has 112 divisors (see below), whose sum is σ = 198241920. Its totient is φ = 21772800.

The previous prime is 66374197. The next prime is 66374213. The reversal of 66374208 is 80247366.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122418 + ... + 122958.

Almost surely, 2^66374208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66374208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99120960).

66374208 is an abundant number, since it is smaller than the sum of its proper divisors (131867712).

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

66374208 is a wasteful number, since it uses less digits than its factorization.

66374208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 633 (or 617 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 66374208 is about 8147.0367619153. The cubic root of 66374208 is about 404.8863329847.

The spelling of 66374208 in words is "sixty-six million, three hundred seventy-four thousand, two hundred eight".