66949000 has 32 divisors (see below), whose sum is σ = 156663000. Its totient is φ = 26779200.

The previous prime is 66948983. The next prime is 66949007. The reversal of 66949000 is 94966.

It can be written as a sum of positive squares in 4 ways, for example, as 37724164 + 29224836 = 6142^2 + 5406^2 .

It is not an unprimeable number, because it can be changed into a prime (66949007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32475 + ... + 34474.

Almost surely, 2^66949000 is an apocalyptic number.

It is an amenable number.

66949000 is an abundant number, since it is smaller than the sum of its proper divisors (89714000).

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

66949000 is a wasteful number, since it uses less digits than its factorization.

66949000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66970 (or 66956 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 66949000 is about 8182.2368579747. The cubic root of 66949000 is about 406.0517296799.

The spelling of 66949000 in words is "sixty-six million, nine hundred forty-nine thousand".