626740633 has 2 divisors, whose sum is σ = 626740634. Its totient is φ = 626740632.

The previous prime is 626740591. The next prime is 626740651. The reversal of 626740633 is 336047626.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 622851849 + 3888784 = 24957^2 + 1972^2 .

It is a cyclic number.

It is not a de Polignac number, because 626740633 - 2¹³ = 626732441 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 626740592 and 626740601.

It is not a weakly prime, because it can be changed into another prime (626740033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 313370316 + 313370317.

It is an arithmetic number, because the mean of its divisors is an integer number (313370317).

Almost surely, 2^626740633 is an apocalyptic number.

It is an amenable number.

626740633 is a deficient number, since it is larger than the sum of its proper divisors (1).

626740633 is an equidigital number, since it uses as much as digits as its factorization.

626740633 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 37.

The square root of 626740633 is about 25034.7884552676. The cubic root of 626740633 is about 855.7809551217.

The spelling of 626740633 in words is "six hundred twenty-six million, seven hundred forty thousand, six hundred thirty-three".