87000621 has 8 divisors (see below), whose sum is σ = 117027840. Its totient is φ = 57486912.

The previous prime is 87000553. The next prime is 87000649. The reversal of 87000621 is 12600078.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 87000621 - 2¹⁰ = 86999597 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87000591 and 87000600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87000671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127981 + ... + 128658.

It is an arithmetic number, because the mean of its divisors is an integer number (14628480).

Almost surely, 2^87000621 is an apocalyptic number.

It is an amenable number.

87000621 is a deficient number, since it is larger than the sum of its proper divisors (30027219).

87000621 is a wasteful number, since it uses less digits than its factorization.

87000621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256755.

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 87000621 is about 9327.4123421236. The cubic root of 87000621 is about 443.1058164506.

Adding to 87000621 its reverse (12600078), we get a palindrome (99600699).

The spelling of 87000621 in words is "eighty-seven million, six hundred twenty-one", and thus it is an aban number.