626140423 has 2 divisors, whose sum is σ = 626140424. Its totient is φ = 626140422.

The previous prime is 626140369. The next prime is 626140429. The reversal of 626140423 is 324041626.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 626140423 - 2²¹ = 624043271 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 626140391 and 626140400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (626140429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 313070211 + 313070212.

It is an arithmetic number, because the mean of its divisors is an integer number (313070212).

Almost surely, 2^626140423 is an apocalyptic number.

626140423 is a deficient number, since it is larger than the sum of its proper divisors (1).

626140423 is an equidigital number, since it uses as much as digits as its factorization.

626140423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 626140423 is about 25022.7980649647. The cubic root of 626140423 is about 855.5076829388.

The spelling of 626140423 in words is "six hundred twenty-six million, one hundred forty thousand, four hundred twenty-three".