87154641 has 24 divisors (see below), whose sum is σ = 144318720. Its totient is φ = 49648896.

The previous prime is 87154619. The next prime is 87154651. The reversal of 87154641 is 14645178.

It is a happy number.

87154641 is a `hidden beast` number, since 8 + 7 + 1 + 5 + 4 + 641 = 666.

It is not a de Polignac number, because 87154641 - 2⁷ = 87154513 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 87154596 and 87154605.

It is not an unprimeable number, because it can be changed into a prime (87154651) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20280 + ... + 24198.

It is an arithmetic number, because the mean of its divisors is an integer number (6013280).

Almost surely, 2^87154641 is an apocalyptic number.

It is an amenable number.

87154641 is a deficient number, since it is larger than the sum of its proper divisors (57164079).

87154641 is a wasteful number, since it uses less digits than its factorization.

87154641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4285 (or 4282 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 87154641 is about 9335.6650004164. The cubic root of 87154641 is about 443.3671437961.

The spelling of 87154641 in words is "eighty-seven million, one hundred fifty-four thousand, six hundred forty-one".