623648747 has 2 divisors, whose sum is σ = 623648748. Its totient is φ = 623648746.

The previous prime is 623648699. The next prime is 623648759. The reversal of 623648747 is 747846326.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 623648747 - 2¹⁰ = 623647723 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (623648147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311824373 + 311824374.

It is an arithmetic number, because the mean of its divisors is an integer number (311824374).

Almost surely, 2^623648747 is an apocalyptic number.

623648747 is a deficient number, since it is larger than the sum of its proper divisors (1).

623648747 is an equidigital number, since it uses as much as digits as its factorization.

623648747 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1354752, while the sum is 47.

The square root of 623648747 is about 24972.9603171110. The cubic root of 623648747 is about 854.3713660546.

The spelling of 623648747 in words is "six hundred twenty-three million, six hundred forty-eight thousand, seven hundred forty-seven".