86550621 has 8 divisors (see below), whose sum is σ = 122189184. Its totient is φ = 54306240.

The previous prime is 86550619. The next prime is 86550623. The reversal of 86550621 is 12605568.

It is an interprime number because it is at equal distance from previous prime (86550619) and next prime (86550623).

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

It is not a de Polignac number, because 86550621 - 2¹ = 86550619 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86550623) 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, 848485 + ... + 848586.

It is an arithmetic number, because the mean of its divisors is an integer number (15273648).

Almost surely, 2^86550621 is an apocalyptic number.

It is an amenable number.

86550621 is a deficient number, since it is larger than the sum of its proper divisors (35638563).

86550621 is a wasteful number, since it uses less digits than its factorization.

86550621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1697091.

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 86550621 is about 9303.2586226548. The cubic root of 86550621 is about 442.3405253797.

The spelling of 86550621 in words is "eighty-six million, five hundred fifty thousand, six hundred twenty-one".