654345403 has 2 divisors, whose sum is σ = 654345404. Its totient is φ = 654345402.

The previous prime is 654345401. The next prime is 654345437. The reversal of 654345403 is 304543456.

It is an a-pointer prime, because the next prime (654345437) can be obtained adding 654345403 to its sum of digits (34).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 654345403 - 2¹ = 654345401 is a prime.

Together with 654345401, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (654345401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327172701 + 327172702.

It is an arithmetic number, because the mean of its divisors is an integer number (327172702).

Almost surely, 2^654345403 is an apocalyptic number.

654345403 is a deficient number, since it is larger than the sum of its proper divisors (1).

654345403 is an equidigital number, since it uses as much as digits as its factorization.

654345403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86400, while the sum is 34.

The square root of 654345403 is about 25580.1759767207. The cubic root of 654345403 is about 868.1651570990.

Adding to 654345403 its reverse (304543456), we get a palindrome (958888859).

The spelling of 654345403 in words is "six hundred fifty-four million, three hundred forty-five thousand, four hundred three".