669870867 has 8 divisors (see below), whose sum is σ = 894108096. Its totient is φ = 446107112.

The previous prime is 669870863. The next prime is 669870889. The reversal of 669870867 is 768078966.

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 669870867 - 2² = 669870863 is a prime.

It is not an unprimeable number, because it can be changed into a prime (669870863) 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, 115053 + ... + 120734.

It is an arithmetic number, because the mean of its divisors is an integer number (111763512).

Almost surely, 2^669870867 is an apocalyptic number.

669870867 is a deficient number, since it is larger than the sum of its proper divisors (224237229).

669870867 is a wasteful number, since it uses less digits than its factorization.

669870867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236737.

The product of its (nonzero) digits is 6096384, while the sum is 57.

The square root of 669870867 is about 25881.8636693728. The cubic root of 669870867 is about 874.9777918717.

The spelling of 669870867 in words is "six hundred sixty-nine million, eight hundred seventy thousand, eight hundred sixty-seven".