87506019 has 12 divisors (see below), whose sum is σ = 127626096. Its totient is φ = 57770352.

The previous prime is 87506017. The next prime is 87506033. The reversal of 87506019 is 91060578.

It is not a de Polignac number, because 87506019 - 2¹ = 87506017 is a prime.

It is a super-2 number, since 2×87506019² = 15314606722456722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (87506011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46272 + ... + 48125.

It is an arithmetic number, because the mean of its divisors is an integer number (10635508).

Almost surely, 2^87506019 is an apocalyptic number.

87506019 is a deficient number, since it is larger than the sum of its proper divisors (40120077).

87506019 is a wasteful number, since it uses less digits than its factorization.

87506019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94506 (or 94503 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 87506019 is about 9354.4651904852. The cubic root of 87506019 is about 443.9621802459.

The spelling of 87506019 in words is "eighty-seven million, five hundred six thousand, nineteen".