67164505 has 4 divisors (see below), whose sum is σ = 80597412. Its totient is φ = 53731600.

The previous prime is 67164499. The next prime is 67164511. The reversal of 67164505 is 50546176.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (67164499) and next prime (67164511).

It can be written as a sum of positive squares in 2 ways, for example, as 53348416 + 13816089 = 7304^2 + 3717^2 .

It is not a de Polignac number, because 67164505 - 2¹⁵ = 67131737 is a prime.

It is a super-2 number, since 2×67164505² = 9022141463790050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6716446 + ... + 6716455.

It is an arithmetic number, because the mean of its divisors is an integer number (20149353).

Almost surely, 2^67164505 is an apocalyptic number.

It is an amenable number.

67164505 is a deficient number, since it is larger than the sum of its proper divisors (13432907).

67164505 is a wasteful number, since it uses less digits than its factorization.

67164505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13432906.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 67164505 is about 8195.3953534897. The cubic root of 67164505 is about 406.4869487924.

The spelling of 67164505 in words is "sixty-seven million, one hundred sixty-four thousand, five hundred five".