140345766 has 48 divisors (see below), whose sum is σ = 332579520. Its totient is φ = 42419760.

The previous prime is 140345743. The next prime is 140345767. The reversal of 140345766 is 667543041.

It is a happy number.

140345766 is a `hidden beast` number, since 140 + 3 + 457 + 66 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 140345766.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140345767) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 110845 + ... + 112103.

It is an arithmetic number, because the mean of its divisors is an integer number (6928740).

Almost surely, 2^140345766 is an apocalyptic number.

140345766 is an abundant number, since it is smaller than the sum of its proper divisors (192233754).

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

140345766 is a wasteful number, since it uses less digits than its factorization.

140345766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1841 (or 1838 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 140345766 is about 11846.7618360462. The cubic root of 140345766 is about 519.6765320620.

The spelling of 140345766 in words is "one hundred forty million, three hundred forty-five thousand, seven hundred sixty-six".