140666746 has 8 divisors (see below), whose sum is σ = 230181984. Its totient is φ = 63939420.

The previous prime is 140666741. The next prime is 140666753. The reversal of 140666746 is 647666041.

It is a happy number.

140666746 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 140666699 and 140666708.

It is not an unprimeable number, because it can be changed into a prime (140666741) 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, 3196950 + ... + 3196993.

It is an arithmetic number, because the mean of its divisors is an integer number (28772748).

Almost surely, 2^140666746 is an apocalyptic number.

140666746 is a deficient number, since it is larger than the sum of its proper divisors (89515238).

140666746 is a wasteful number, since it uses less digits than its factorization.

140666746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6393956.

The product of its (nonzero) digits is 145152, while the sum is 40.

The square root of 140666746 is about 11860.3012609293. The cubic root of 140666746 is about 520.0724085559.

The spelling of 140666746 in words is "one hundred forty million, six hundred sixty-six thousand, seven hundred forty-six".