140623616 has 72 divisors (see below), whose sum is σ = 324505440. Its totient is φ = 59572224.

The previous prime is 140623601. The next prime is 140623619. The reversal of 140623616 is 616326041.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140623619) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 173420 + ... + 174228.

It is an arithmetic number, because the mean of its divisors is an integer number (4507020).

Almost surely, 2^140623616 is an apocalyptic number.

140623616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140623616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162252720).

140623616 is an abundant number, since it is smaller than the sum of its proper divisors (183881824).

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

140623616 is an frugal number, since it uses more digits than its factorization.

140623616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 929 (or 915 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 140623616 is about 11858.4828709241. The cubic root of 140623616 is about 520.0192497805.

Adding to 140623616 its reverse (616326041), we get a palindrome (756949657).

The spelling of 140623616 in words is "one hundred forty million, six hundred twenty-three thousand, six hundred sixteen".