66670011 has 12 divisors (see below), whose sum is σ = 97880640. Its totient is φ = 43717680.

The previous prime is 66669997. The next prime is 66670013. The reversal of 66670011 is 11007666.

It is not a de Polignac number, because 66670011 - 2⁶ = 66669947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66670013) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60171 + ... + 61268.

It is an arithmetic number, because the mean of its divisors is an integer number (8156720).

Almost surely, 2^66670011 is an apocalyptic number.

66670011 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

66670011 is a deficient number, since it is larger than the sum of its proper divisors (31210629).

66670011 is a wasteful number, since it uses less digits than its factorization.

66670011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121506 (or 121503 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 66670011 is about 8165.1706044638. The cubic root of 66670011 is about 405.4869132285.

Adding to 66670011 its reverse (11007666), we get a palindrome (77677677).

The spelling of 66670011 in words is "sixty-six million, six hundred seventy thousand, eleven".