669026755 has 8 divisors (see below), whose sum is σ = 850057632. Its totient is φ = 503737728.

The previous prime is 669026753. The next prime is 669026777. The reversal of 669026755 is 557620966.

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 669026755 - 2¹ = 669026753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (669026753) 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, 3935367 + ... + 3935536.

It is an arithmetic number, because the mean of its divisors is an integer number (106257204).

Almost surely, 2^669026755 is an apocalyptic number.

669026755 is a deficient number, since it is larger than the sum of its proper divisors (181030877).

669026755 is a wasteful number, since it uses less digits than its factorization.

669026755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7870925.

The product of its (nonzero) digits is 680400, while the sum is 46.

The square root of 669026755 is about 25865.5515116148. The cubic root of 669026755 is about 874.6101141902.

The spelling of 669026755 in words is "six hundred sixty-nine million, twenty-six thousand, seven hundred fifty-five".