164767969 has 4 divisors (see below), whose sum is σ = 164802820. Its totient is φ = 164733120.

The previous prime is 164767957. The next prime is 164768011. The reversal of 164767969 is 969767461.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 128527569 + 36240400 = 11337^2 + 6020^2 .

It is a cyclic number.

It is not a de Polignac number, because 164767969 - 2²¹ = 162670817 is a prime.

It is a super-2 number, since 2×164767969² = 54296967216769922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164767949) 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, 8964 + ... + 20245.

It is an arithmetic number, because the mean of its divisors is an integer number (41200705).

Almost surely, 2^164767969 is an apocalyptic number.

It is an amenable number.

164767969 is a deficient number, since it is larger than the sum of its proper divisors (34851).

164767969 is an equidigital number, since it uses as much as digits as its factorization.

164767969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34850.

The product of its digits is 3429216, while the sum is 55.

The square root of 164767969 is about 12836.1976067681. The cubic root of 164767969 is about 548.2234346034.

The spelling of 164767969 in words is "one hundred sixty-four million, seven hundred sixty-seven thousand, nine hundred sixty-nine".