140256663 has 4 divisors (see below), whose sum is σ = 187008888. Its totient is φ = 93504440.

The previous prime is 140256659. The next prime is 140256667. The reversal of 140256663 is 366652041.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (140256659) and next prime (140256667).

It is a cyclic number.

It is not a de Polignac number, because 140256663 - 2² = 140256659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140256667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23376108 + ... + 23376113.

It is an arithmetic number, because the mean of its divisors is an integer number (46752222).

Almost surely, 2^140256663 is an apocalyptic number.

140256663 is a deficient number, since it is larger than the sum of its proper divisors (46752225).

140256663 is an equidigital number, since it uses as much as digits as its factorization.

140256663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46752224.

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 140256663 is about 11843.0005910664. Note that the first 3 decimals coincide. The cubic root of 140256663 is about 519.5665310216.

The spelling of 140256663 in words is "one hundred forty million, two hundred fifty-six thousand, six hundred sixty-three".