497766266689 has 8 divisors (see below), whose sum is σ = 503382789000. Its totient is φ = 492150269952.

The previous prime is 497766266677. The next prime is 497766266729. The reversal of 497766266689 is 986662667794.

It can be written as a sum of positive squares in 4 ways, for example, as 3409625664 + 494356641025 = 58392^2 + 703105^2 .

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 497766266689 - 2⁷ = 497766266561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (497766266629) 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, 1960177 + ... + 2199505.

It is an arithmetic number, because the mean of its divisors is an integer number (62922848625).

Almost surely, 2^497766266689 is an apocalyptic number.

It is an amenable number.

497766266689 is a deficient number, since it is larger than the sum of its proper divisors (5616522311).

497766266689 is a wasteful number, since it uses less digits than its factorization.

497766266689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262787.

The product of its digits is 1975228416, while the sum is 76.

The spelling of 497766266689 in words is "four hundred ninety-seven billion, seven hundred sixty-six million, two hundred sixty-six thousand, six hundred eighty-nine".