164215087 has 4 divisors (see below), whose sum is σ = 173874816. Its totient is φ = 154555360.

The previous prime is 164215061. The next prime is 164215097. The reversal of 164215087 is 780512461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 780512461 = 797 ⋅979313.

It is a cyclic number.

It is not a de Polignac number, because 164215087 - 2⁷ = 164214959 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 (164215097) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4829839 + ... + 4829872.

It is an arithmetic number, because the mean of its divisors is an integer number (43468704).

Almost surely, 2^164215087 is an apocalyptic number.

164215087 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

164215087 is a deficient number, since it is larger than the sum of its proper divisors (9659729).

164215087 is an equidigital number, since it uses as much as digits as its factorization.

164215087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9659728.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 164215087 is about 12814.6434597300. The cubic root of 164215087 is about 547.6095561360.

The spelling of 164215087 in words is "one hundred sixty-four million, two hundred fifteen thousand, eighty-seven".