667226303281 has 4 divisors (see below), whose sum is σ = 667265868864. Its totient is φ = 667186737700.

The previous prime is 667226303273. The next prime is 667226303291. The reversal of 667226303281 is 182303622766.

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 not a de Polignac number, because 667226303281 - 2³ = 667226303273 is a prime.

It is a super-2 number, since 2×667226303281² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (667226303231) 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, 19757485 + ... + 19791226.

It is an arithmetic number, because the mean of its divisors is an integer number (166816467216).

Almost surely, 2^667226303281 is an apocalyptic number.

It is an amenable number.

667226303281 is a deficient number, since it is larger than the sum of its proper divisors (39565583).

667226303281 is a wasteful number, since it uses less digits than its factorization.

667226303281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39565582.

The product of its (nonzero) digits is 870912, while the sum is 46.

The spelling of 667226303281 in words is "six hundred sixty-seven billion, two hundred twenty-six million, three hundred three thousand, two hundred eighty-one".