634476487 has 2 divisors, whose sum is σ = 634476488. Its totient is φ = 634476486.

The previous prime is 634476467. The next prime is 634476511. The reversal of 634476487 is 784674436.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 634476487 - 2¹¹ = 634474439 is a prime.

It is a super-2 number, since 2×634476487² = 805120825111722338, which contains 22 as substring.

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 634476487.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (634476467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317238243 + 317238244.

It is an arithmetic number, because the mean of its divisors is an integer number (317238244).

Almost surely, 2^634476487 is an apocalyptic number.

634476487 is a deficient number, since it is larger than the sum of its proper divisors (1).

634476487 is an equidigital number, since it uses as much as digits as its factorization.

634476487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2709504, while the sum is 49.

The square root of 634476487 is about 25188.8167050380. The cubic root of 634476487 is about 859.2875327785.

The spelling of 634476487 in words is "six hundred thirty-four million, four hundred seventy-six thousand, four hundred eighty-seven".