86210621 has 8 divisors (see below), whose sum is σ = 104322240. Its totient is φ = 69547968.

The previous prime is 86210609. The next prime is 86210639. The reversal of 86210621 is 12601268.

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

It is not a de Polignac number, because 86210621 - 2⁶ = 86210557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86210681) 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, 362111 + ... + 362348.

It is an arithmetic number, because the mean of its divisors is an integer number (13040280).

Almost surely, 2^86210621 is an apocalyptic number.

It is an amenable number.

86210621 is a deficient number, since it is larger than the sum of its proper divisors (18111619).

86210621 is a wasteful number, since it uses less digits than its factorization.

86210621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724483.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 86210621 is about 9284.9674743641. The cubic root of 86210621 is about 441.7605443893.

Adding to 86210621 its reverse (12601268), we get a palindrome (98811889).

The spelling of 86210621 in words is "eighty-six million, two hundred ten thousand, six hundred twenty-one".