140623559 has 4 divisors (see below), whose sum is σ = 141360000. Its totient is φ = 139887120.

The previous prime is 140623547. The next prime is 140623583. The reversal of 140623559 is 955326041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 955326041 = 7039 ⋅135719.

It is a cyclic number.

It is not a de Polignac number, because 140623559 - 2⁴ = 140623543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140623529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 367934 + ... + 368315.

It is an arithmetic number, because the mean of its divisors is an integer number (35340000).

Almost surely, 2^140623559 is an apocalyptic number.

140623559 is a deficient number, since it is larger than the sum of its proper divisors (736441).

140623559 is an equidigital number, since it uses as much as digits as its factorization.

140623559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736440.

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 140623559 is about 11858.4804675810. The cubic root of 140623559 is about 520.0191795194.

The spelling of 140623559 in words is "one hundred forty million, six hundred twenty-three thousand, five hundred fifty-nine".