164998997 has 2 divisors, whose sum is σ = 164998998. Its totient is φ = 164998996.

The previous prime is 164998949. The next prime is 164999011. The reversal of 164998997 is 799899461.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 136632721 + 28366276 = 11689^2 + 5326^2 .

It is an emirp because it is prime and its reverse (799899461) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 164998997 - 2²⁰ = 163950421 is a prime.

It is a super-2 number, since 2×164998997² = 54449338022012018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164928997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82499498 + 82499499.

It is an arithmetic number, because the mean of its divisors is an integer number (82499499).

Almost surely, 2^164998997 is an apocalyptic number.

It is an amenable number.

164998997 is a deficient number, since it is larger than the sum of its proper divisors (1).

164998997 is an equidigital number, since it uses as much as digits as its factorization.

164998997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8817984, while the sum is 62.

The square root of 164998997 is about 12845.1935368837. The cubic root of 164998997 is about 548.4795438752.

The spelling of 164998997 in words is "one hundred sixty-four million, nine hundred ninety-eight thousand, nine hundred ninety-seven".