669036268749 has 8 divisors (see below), whose sum is σ = 892943094880. Its totient is φ = 445576810896.

The previous prime is 669036268741. The next prime is 669036268757. The reversal of 669036268749 is 947862630966.

It is an interprime number because it is at equal distance from previous prime (669036268741) and next prime (669036268757).

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

It is not a de Polignac number, because 669036268749 - 2³ = 669036268741 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 669036268749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669036268741) 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, 111838579 + ... + 111844560.

It is an arithmetic number, because the mean of its divisors is an integer number (111617886860).

Almost surely, 2^669036268749 is an apocalyptic number.

It is an amenable number.

669036268749 is a deficient number, since it is larger than the sum of its proper divisors (223906826131).

669036268749 is a wasteful number, since it uses less digits than its factorization.

669036268749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223684139.

The product of its (nonzero) digits is 141087744, while the sum is 66.

The spelling of 669036268749 in words is "six hundred sixty-nine billion, thirty-six million, two hundred sixty-eight thousand, seven hundred forty-nine".