87622641 has 24 divisors (see below), whose sum is σ = 138981024. Its totient is φ = 54976320.

The previous prime is 87622637. The next prime is 87622649. The reversal of 87622641 is 14622678.

87622641 is a `hidden beast` number, since 8 + 7 + 6 + 2 + 2 + 641 = 666.

It is not a de Polignac number, because 87622641 - 2² = 87622637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87622596 and 87622605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87622649) 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 in 23 ways as a sum of consecutive naturals, for example, 6475 + ... + 14736.

It is an arithmetic number, because the mean of its divisors is an integer number (5790876).

Almost surely, 2^87622641 is an apocalyptic number.

87622641 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

It is an amenable number.

87622641 is a deficient number, since it is larger than the sum of its proper divisors (51358383).

87622641 is a wasteful number, since it uses less digits than its factorization.

87622641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21243 (or 21231 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 87622641 is about 9360.6966086932. The cubic root of 87622641 is about 444.1593201072.

The spelling of 87622641 in words is "eighty-seven million, six hundred twenty-two thousand, six hundred forty-one".