646035487 has 2 divisors, whose sum is σ = 646035488. Its totient is φ = 646035486.

The previous prime is 646035463. The next prime is 646035521. The reversal of 646035487 is 784530646.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-646035487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (646035437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 323017743 + 323017744.

It is an arithmetic number, because the mean of its divisors is an integer number (323017744).

Almost surely, 2^646035487 is an apocalyptic number.

646035487 is a deficient number, since it is larger than the sum of its proper divisors (1).

646035487 is an equidigital number, since it uses as much as digits as its factorization.

646035487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 483840, while the sum is 43.

The square root of 646035487 is about 25417.2281533609. The cubic root of 646035487 is about 864.4743761112.

The spelling of 646035487 in words is "six hundred forty-six million, thirty-five thousand, four hundred eighty-seven".