654135437 has 2 divisors, whose sum is σ = 654135438. Its totient is φ = 654135436.

The previous prime is 654135431. The next prime is 654135481. The reversal of 654135437 is 734531456.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 441588196 + 212547241 = 21014^2 + 14579^2 .

It is a cyclic number.

It is not a de Polignac number, because 654135437 - 2⁴ = 654135421 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 654135437.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (654135431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327067718 + 327067719.

It is an arithmetic number, because the mean of its divisors is an integer number (327067719).

Almost surely, 2^654135437 is an apocalyptic number.

It is an amenable number.

654135437 is a deficient number, since it is larger than the sum of its proper divisors (1).

654135437 is an equidigital number, since it uses as much as digits as its factorization.

654135437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 151200, while the sum is 38.

The square root of 654135437 is about 25576.0715709039. The cubic root of 654135437 is about 868.0722883760.

The spelling of 654135437 in words is "six hundred fifty-four million, one hundred thirty-five thousand, four hundred thirty-seven".