140066907 has 4 divisors (see below), whose sum is σ = 186755880. Its totient is φ = 93377936.

The previous prime is 140066891. The next prime is 140066911. The reversal of 140066907 is 709660041.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 709660041 = 3 ⋅236553347.

It is a cyclic number.

It is not a de Polignac number, because 140066907 - 2⁴ = 140066891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (140066957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23344482 + ... + 23344487.

It is an arithmetic number, because the mean of its divisors is an integer number (46688970).

Almost surely, 2^140066907 is an apocalyptic number.

140066907 is a deficient number, since it is larger than the sum of its proper divisors (46688973).

140066907 is an equidigital number, since it uses as much as digits as its factorization.

140066907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46688972.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 140066907 is about 11834.9865652649. The cubic root of 140066907 is about 519.3321146788.

The spelling of 140066907 in words is "one hundred forty million, sixty-six thousand, nine hundred seven".