669760771 has 8 divisors (see below), whose sum is σ = 693298080. Its totient is φ = 646252992.

The previous prime is 669760753. The next prime is 669760783. The reversal of 669760771 is 177067966.

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 669760771 - 2¹³ = 669752579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (669760471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45231 + ... + 58183.

It is an arithmetic number, because the mean of its divisors is an integer number (86662260).

Almost surely, 2^669760771 is an apocalyptic number.

669760771 is a deficient number, since it is larger than the sum of its proper divisors (23537309).

669760771 is a wasteful number, since it uses less digits than its factorization.

669760771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14765.

The product of its (nonzero) digits is 666792, while the sum is 49.

The square root of 669760771 is about 25879.7366872231. The cubic root of 669760771 is about 874.9298538597.

The spelling of 669760771 in words is "six hundred sixty-nine million, seven hundred sixty thousand, seven hundred seventy-one".