629647423 has 2 divisors, whose sum is σ = 629647424. Its totient is φ = 629647422.

The previous prime is 629647399. The next prime is 629647457. The reversal of 629647423 is 324746926.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 629647423 - 2²¹ = 627550271 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 629647423.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (629647223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314823711 + 314823712.

It is an arithmetic number, because the mean of its divisors is an integer number (314823712).

Almost surely, 2^629647423 is an apocalyptic number.

629647423 is a deficient number, since it is larger than the sum of its proper divisors (1).

629647423 is an equidigital number, since it uses as much as digits as its factorization.

629647423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 435456, while the sum is 43.

The square root of 629647423 is about 25092.7763111219. The cubic root of 629647423 is about 857.1019373177.

The spelling of 629647423 in words is "six hundred twenty-nine million, six hundred forty-seven thousand, four hundred twenty-three".