66796169 has 4 divisors (see below), whose sum is σ = 72868560. Its totient is φ = 60723780.

The previous prime is 66796127. The next prime is 66796183. The reversal of 66796169 is 96169766.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 66796169 - 2⁸ = 66795913 is a prime.

It is a super-2 number, since 2×66796169² = 8923456386153122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66796189) 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, 3036179 + ... + 3036200.

It is an arithmetic number, because the mean of its divisors is an integer number (18217140).

Almost surely, 2^66796169 is an apocalyptic number.

It is an amenable number.

66796169 is a deficient number, since it is larger than the sum of its proper divisors (6072391).

66796169 is a wasteful number, since it uses less digits than its factorization.

66796169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6072390.

The product of its digits is 734832, while the sum is 50.

The square root of 66796169 is about 8172.8923276891. The cubic root of 66796169 is about 405.7425163320.

The spelling of 66796169 in words is "sixty-six million, seven hundred ninety-six thousand, one hundred sixty-nine".