140624641 has 2 divisors, whose sum is σ = 140624642. Its totient is φ = 140624640.

The previous prime is 140624633. The next prime is 140624647. The reversal of 140624641 is 146426041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 91680625 + 48944016 = 9575^2 + 6996^2 .

It is a cyclic number.

It is not a de Polignac number, because 140624641 - 2³ = 140624633 is a prime.

It is not a weakly prime, because it can be changed into another prime (140624647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70312320 + 70312321.

It is an arithmetic number, because the mean of its divisors is an integer number (70312321).

Almost surely, 2^140624641 is an apocalyptic number.

It is an amenable number.

140624641 is a deficient number, since it is larger than the sum of its proper divisors (1).

140624641 is an equidigital number, since it uses as much as digits as its factorization.

140624641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 140624641 is about 11858.5260888527. The cubic root of 140624641 is about 520.0205132440.

The spelling of 140624641 in words is "one hundred forty million, six hundred twenty-four thousand, six hundred forty-one".