654463400623 has 2 divisors, whose sum is σ = 654463400624. Its totient is φ = 654463400622.

The previous prime is 654463400537. The next prime is 654463400713. The reversal of 654463400623 is 326004364456.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 654463400623 - 2²¹ = 654461303471 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 654463400623.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (654463400323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327231700311 + 327231700312.

It is an arithmetic number, because the mean of its divisors is an integer number (327231700312).

Almost surely, 2^654463400623 is an apocalyptic number.

654463400623 is a deficient number, since it is larger than the sum of its proper divisors (1).

654463400623 is an equidigital number, since it uses as much as digits as its factorization.

654463400623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1244160, while the sum is 43.

The spelling of 654463400623 in words is "six hundred fifty-four billion, four hundred sixty-three million, four hundred thousand, six hundred twenty-three".