669296354057 has 4 divisors (see below), whose sum is σ = 670729537296. Its totient is φ = 667863170820.

The previous prime is 669296354047. The next prime is 669296354137. The reversal of 669296354057 is 750453692966.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-669296354057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (669296354047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 716590919 + ... + 716591852.

It is an arithmetic number, because the mean of its divisors is an integer number (167682384324).

Almost surely, 2^669296354057 is an apocalyptic number.

It is an amenable number.

669296354057 is a deficient number, since it is larger than the sum of its proper divisors (1433183239).

669296354057 is a wasteful number, since it uses less digits than its factorization.

669296354057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1433183238.

The product of its (nonzero) digits is 73483200, while the sum is 62.

The spelling of 669296354057 in words is "six hundred sixty-nine billion, two hundred ninety-six million, three hundred fifty-four thousand, fifty-seven".