164240917 has 4 divisors (see below), whose sum is σ = 164297536. Its totient is φ = 164184300.

The previous prime is 164240897. The next prime is 164240977. The reversal of 164240917 is 719042461.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 164240917 - 2⁷ = 164240789 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 (164240977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23709 + ... + 29842.

It is an arithmetic number, because the mean of its divisors is an integer number (41074384).

Almost surely, 2^164240917 is an apocalyptic number.

It is an amenable number.

164240917 is a deficient number, since it is larger than the sum of its proper divisors (56619).

164240917 is an equidigital number, since it uses as much as digits as its factorization.

164240917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56618.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 164240917 is about 12815.6512514971. The cubic root of 164240917 is about 547.6382664767.

It can be divided in two parts, 164 and 240917, that added together give a square (241081 = 491²).

The spelling of 164240917 in words is "one hundred sixty-four million, two hundred forty thousand, nine hundred seventeen".