87724627 has 2 divisors, whose sum is σ = 87724628. Its totient is φ = 87724626.

The previous prime is 87724621. The next prime is 87724639. The reversal of 87724627 is 72642778.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87724627 - 2³ = 87724619 is a prime.

It is a super-2 number, since 2×87724627² = 15391220364578258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (87724621) 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, 43862313 + 43862314.

It is an arithmetic number, because the mean of its divisors is an integer number (43862314).

Almost surely, 2^87724627 is an apocalyptic number.

87724627 is a deficient number, since it is larger than the sum of its proper divisors (1).

87724627 is an equidigital number, since it uses as much as digits as its factorization.

87724627 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 263424, while the sum is 43.

The square root of 87724627 is about 9366.1425891345. The cubic root of 87724627 is about 444.3315756977.

The spelling of 87724627 in words is "eighty-seven million, seven hundred twenty-four thousand, six hundred twenty-seven".