87467819 has 2 divisors, whose sum is σ = 87467820. Its totient is φ = 87467818.

The previous prime is 87467789. The next prime is 87467851. The reversal of 87467819 is 91876478.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87467819 - 2⁸ = 87467563 is a prime.

It is a super-2 number, since 2×87467819² = 15301238721233522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (87467869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43733909 + 43733910.

It is an arithmetic number, because the mean of its divisors is an integer number (43733910).

Almost surely, 2^87467819 is an apocalyptic number.

87467819 is a deficient number, since it is larger than the sum of its proper divisors (1).

87467819 is an equidigital number, since it uses as much as digits as its factorization.

87467819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 677376, while the sum is 50.

The square root of 87467819 is about 9352.4231619404. The cubic root of 87467819 is about 443.8975682192.

The spelling of 87467819 in words is "eighty-seven million, four hundred sixty-seven thousand, eight hundred nineteen".