487621867 has 2 divisors, whose sum is σ = 487621868. Its totient is φ = 487621866.

The previous prime is 487621817. The next prime is 487621903. The reversal of 487621867 is 768126784.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-487621867 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 487621867.

It is not a weakly prime, because it can be changed into another prime (487621817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 243810933 + 243810934.

It is an arithmetic number, because the mean of its divisors is an integer number (243810934).

Almost surely, 2^487621867 is an apocalyptic number.

487621867 is a deficient number, since it is larger than the sum of its proper divisors (1).

487621867 is an equidigital number, since it uses as much as digits as its factorization.

487621867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 903168, while the sum is 49.

The square root of 487621867 is about 22082.1617374749. The cubic root of 487621867 is about 787.0960344181.

The spelling of 487621867 in words is "four hundred eighty-seven million, six hundred twenty-one thousand, eight hundred sixty-seven".