87923619 has 12 divisors (see below), whose sum is σ = 145143856. Its totient is φ = 50242032.

The previous prime is 87923599. The next prime is 87923623. The reversal of 87923619 is 91632978.

87923619 is a `hidden beast` number, since 8 + 7 + 9 + 23 + 619 = 666.

It is not a de Polignac number, because 87923619 - 2¹⁷ = 87792547 is a prime.

It is a super-2 number, since 2×87923619² = 15461125556114322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87923669) 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, 697744 + ... + 697869.

Almost surely, 2^87923619 is an apocalyptic number.

87923619 is a deficient number, since it is larger than the sum of its proper divisors (57220237).

87923619 is a wasteful number, since it uses less digits than its factorization.

87923619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1395626 (or 1395623 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 87923619 is about 9376.7595148857. The cubic root of 87923619 is about 444.6672916032.

The spelling of 87923619 in words is "eighty-seven million, nine hundred twenty-three thousand, six hundred nineteen".