66850892 has 12 divisors (see below), whose sum is σ = 123146520. Its totient is φ = 31666176.

The previous prime is 66850891. The next prime is 66850907. The reversal of 66850892 is 29805866.

It is a happy number.

It is a super-2 number, since 2×66850892² = 8938083522391328, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (66850891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 439733 + ... + 439884.

It is an arithmetic number, because the mean of its divisors is an integer number (10262210).

Almost surely, 2^66850892 is an apocalyptic number.

It is an amenable number.

66850892 is a deficient number, since it is larger than the sum of its proper divisors (56295628).

66850892 is a wasteful number, since it uses less digits than its factorization.

66850892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 879640 (or 879638 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 44.

The square root of 66850892 is about 8176.2394779018. The cubic root of 66850892 is about 405.8532880893.

The spelling of 66850892 in words is "sixty-six million, eight hundred fifty thousand, eight hundred ninety-two".