164641215 has 8 divisors (see below), whose sum is σ = 263425968. Its totient is φ = 87808640.

The previous prime is 164641201. The next prime is 164641229. The reversal of 164641215 is 512146461.

It is an interprime number because it is at equal distance from previous prime (164641201) and next prime (164641229).

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

It is not a de Polignac number, because 164641215 - 2⁹ = 164640703 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5488026 + ... + 5488055.

It is an arithmetic number, because the mean of its divisors is an integer number (32928246).

Almost surely, 2^164641215 is an apocalyptic number.

164641215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

164641215 is a deficient number, since it is larger than the sum of its proper divisors (98784753).

164641215 is a wasteful number, since it uses less digits than its factorization.

164641215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10976089.

The product of its digits is 5760, while the sum is 30.

The square root of 164641215 is about 12831.2592912777. The cubic root of 164641215 is about 548.0828179928.

Adding to 164641215 its reverse (512146461), we get a palindrome (676787676).

The spelling of 164641215 in words is "one hundred sixty-four million, six hundred forty-one thousand, two hundred fifteen".