140535066 has 32 divisors (see below), whose sum is σ = 322208640. Its totient is φ = 40029696.

The previous prime is 140535047. The next prime is 140535067. The reversal of 140535066 is 660535041.

140535066 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (140535067) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9190 + ... + 19118.

It is an arithmetic number, because the mean of its divisors is an integer number (10069020).

Almost surely, 2^140535066 is an apocalyptic number.

140535066 is an abundant number, since it is smaller than the sum of its proper divisors (181673574).

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

140535066 is a wasteful number, since it uses less digits than its factorization.

140535066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10278.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 140535066 is about 11854.7486687825. The cubic root of 140535066 is about 519.9100756730.

The spelling of 140535066 in words is "one hundred forty million, five hundred thirty-five thousand, sixty-six".