654338437 has 2 divisors, whose sum is σ = 654338438. Its totient is φ = 654338436.

The previous prime is 654338423. The next prime is 654338459. The reversal of 654338437 is 734833456.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 382945761 + 271392676 = 19569^2 + 16474^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-654338437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 654338393 and 654338402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (654338407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327169218 + 327169219.

It is an arithmetic number, because the mean of its divisors is an integer number (327169219).

Almost surely, 2^654338437 is an apocalyptic number.

It is an amenable number.

654338437 is a deficient number, since it is larger than the sum of its proper divisors (1).

654338437 is an equidigital number, since it uses as much as digits as its factorization.

654338437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 725760, while the sum is 43.

The square root of 654338437 is about 25580.0398162317. The cubic root of 654338437 is about 868.1620763306.

The spelling of 654338437 in words is "six hundred fifty-four million, three hundred thirty-eight thousand, four hundred thirty-seven".