140364643 has 8 divisors (see below), whose sum is σ = 144307280. Its totient is φ = 136429920.

The previous prime is 140364629. The next prime is 140364661. The reversal of 140364643 is 346463041.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 140364643 - 2⁹ = 140364131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140364673) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63328 + ... + 65506.

It is an arithmetic number, because the mean of its divisors is an integer number (18038410).

Almost surely, 2^140364643 is an apocalyptic number.

140364643 is a deficient number, since it is larger than the sum of its proper divisors (3942637).

140364643 is a wasteful number, since it uses less digits than its factorization.

140364643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3957.

The product of its (nonzero) digits is 20736, while the sum is 31.

The square root of 140364643 is about 11847.5585248607. The cubic root of 140364643 is about 519.6998304590.

The spelling of 140364643 in words is "one hundred forty million, three hundred sixty-four thousand, six hundred forty-three".