669615458755 has 8 divisors (see below), whose sum is σ = 803578805424. Its totient is φ = 535665530400.

The previous prime is 669615458741. The next prime is 669615458779. The reversal of 669615458755 is 557854516966.

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

It is not a de Polignac number, because 669615458755 - 2⁵ = 669615458723 is a prime.

It is a Duffinian number.

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, 3244461 + ... + 3444670.

It is an arithmetic number, because the mean of its divisors is an integer number (100447350678).

Almost surely, 2^669615458755 is an apocalyptic number.

669615458755 is a deficient number, since it is larger than the sum of its proper divisors (133963346669).

669615458755 is a wasteful number, since it uses less digits than its factorization.

669615458755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6709157.

The product of its digits is 272160000, while the sum is 67.

The spelling of 669615458755 in words is "six hundred sixty-nine billion, six hundred fifteen million, four hundred fifty-eight thousand, seven hundred fifty-five".