67166065 has 8 divisors (see below), whose sum is σ = 85340520. Its totient is φ = 50572032.

The previous prime is 67166009. The next prime is 67166081. The reversal of 67166065 is 56066176.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 17505856 + 49660209 = 4184^2 + 7047^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 67166065 - 2¹¹ = 67164017 is a prime.

It is a super-2 number, since 2×67166065² = 9022560575168450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 395010 + ... + 395179.

It is an arithmetic number, because the mean of its divisors is an integer number (10667565).

Almost surely, 2^67166065 is an apocalyptic number.

It is an amenable number.

67166065 is a deficient number, since it is larger than the sum of its proper divisors (18174455).

67166065 is a wasteful number, since it uses less digits than its factorization.

67166065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790211.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 67166065 is about 8195.4905283332. The cubic root of 67166065 is about 406.4900958651.

The spelling of 67166065 in words is "sixty-seven million, one hundred sixty-six thousand, sixty-five".