140685650 has 24 divisors (see below), whose sum is σ = 299058240. Its totient is φ = 48234960.

The previous prime is 140685631. The next prime is 140685661. The reversal of 140685650 is 56586041.

It is a happy number.

140685650 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 140685650.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 200630 + ... + 201329.

It is an arithmetic number, because the mean of its divisors is an integer number (12460760).

Almost surely, 2^140685650 is an apocalyptic number.

140685650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

140685650 is an abundant number, since it is smaller than the sum of its proper divisors (158372590).

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

140685650 is a wasteful number, since it uses less digits than its factorization.

140685650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401978 (or 401973 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 140685650 is about 11861.0981784993. The cubic root of 140685650 is about 520.0957047713.

The spelling of 140685650 in words is "one hundred forty million, six hundred eighty-five thousand, six hundred fifty".