654780023 has 2 divisors, whose sum is σ = 654780024. Its totient is φ = 654780022.

The previous prime is 654780011. The next prime is 654780029. The reversal of 654780023 is 320087456.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-654780023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (654780029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327390011 + 327390012.

It is an arithmetic number, because the mean of its divisors is an integer number (327390012).

Almost surely, 2^654780023 is an apocalyptic number.

654780023 is a deficient number, since it is larger than the sum of its proper divisors (1).

654780023 is an equidigital number, since it uses as much as digits as its factorization.

654780023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 654780023 is about 25588.6698169326. The cubic root of 654780023 is about 868.3573279973.

The spelling of 654780023 in words is "six hundred fifty-four million, seven hundred eighty thousand, twenty-three".