487215823 has 2 divisors, whose sum is σ = 487215824. Its totient is φ = 487215822.

The previous prime is 487215821. The next prime is 487215847. The reversal of 487215823 is 328512784.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 487215823 - 2¹ = 487215821 is a prime.

Together with 487215821, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (487215821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 243607911 + 243607912.

It is an arithmetic number, because the mean of its divisors is an integer number (243607912).

Almost surely, 2^487215823 is an apocalyptic number.

487215823 is a deficient number, since it is larger than the sum of its proper divisors (1).

487215823 is an equidigital number, since it uses as much as digits as its factorization.

487215823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 107520, while the sum is 40.

The square root of 487215823 is about 22072.9658858976. The cubic root of 487215823 is about 786.8775014426.

The spelling of 487215823 in words is "four hundred eighty-seven million, two hundred fifteen thousand, eight hundred twenty-three".