164717397 has 12 divisors (see below), whose sum is σ = 256227244. Its totient is φ = 101364480.

The previous prime is 164717387. The next prime is 164717407. The reversal of 164717397 is 793717461.

It is a happy number.

164717397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (164717387) and next prime (164717407).

It can be written as a sum of positive squares in 2 ways, for example, as 68657796 + 96059601 = 8286^2 + 9801^2 .

It is not a de Polignac number, because 164717397 - 2¹⁴ = 164701013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164717317) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 703804 + ... + 704037.

Almost surely, 2^164717397 is an apocalyptic number.

It is an amenable number.

164717397 is a deficient number, since it is larger than the sum of its proper divisors (91509847).

164717397 is a wasteful number, since it uses less digits than its factorization.

164717397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1407860 (or 1407857 counting only the distinct ones).

The product of its digits is 222264, while the sum is 45.

The square root of 164717397 is about 12834.2275575899. The cubic root of 164717397 is about 548.1673403825.

It can be divided in two parts, 1647 and 17397, that added together give a square (19044 = 138²).

The spelling of 164717397 in words is "one hundred sixty-four million, seven hundred seventeen thousand, three hundred ninety-seven".