746668866647 has 16 divisors (see below), whose sum is σ = 826466629632. Its totient is φ = 668874697920.

The previous prime is 746668866599. The next prime is 746668866673.

746668866647 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 746668866647 - 2⁶ = 746668866583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (746668860647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 445148 + ... + 1300574.

It is an arithmetic number, because the mean of its divisors is an integer number (51654164352).

Almost surely, 2^746668866647 is an apocalyptic number.

746668866647 is a deficient number, since it is larger than the sum of its proper divisors (79797762985).

746668866647 is a wasteful number, since it uses less digits than its factorization.

746668866647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 856598.

The product of its digits is 2341011456, while the sum is 74.

The spelling of 746668866647 in words is "seven hundred forty-six billion, six hundred sixty-eight million, eight hundred sixty-six thousand, six hundred forty-seven".