66376746 has 20 divisors (see below), whose sum is σ = 148733442. Its totient is φ = 22125528.

The previous prime is 66376741. The next prime is 66376757. The reversal of 66376746 is 64767366.

66376746 is a `hidden beast` number, since 6 + 637 + 6 + 7 + 4 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 66341025 + 35721 = 8145^2 + 189^2 .

It is not an unprimeable number, because it can be changed into a prime (66376741) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 204705 + ... + 205028.

Almost surely, 2^66376746 is an apocalyptic number.

66376746 is an abundant number, since it is smaller than the sum of its proper divisors (82356696).

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

66376746 is a wasteful number, since it uses less digits than its factorization.

66376746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409747 (or 409738 counting only the distinct ones).

The product of its digits is 762048, while the sum is 45.

The square root of 66376746 is about 8147.1925225810. The cubic root of 66376746 is about 404.8914935656.

The spelling of 66376746 in words is "sixty-six million, three hundred seventy-six thousand, seven hundred forty-six".