668241248534 has 8 divisors (see below), whose sum is σ = 1008364040208. Its totient is φ = 332119901800.

The previous prime is 668241248531. The next prime is 668241248537. The reversal of 668241248534 is 435842142866.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (668241248531) and next prime (668241248537).

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

It is a super-3 number, since 3×668241248534³ (a number of 36 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668241248531) 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, 1000360817 + ... + 1000361484.

It is an arithmetic number, because the mean of its divisors is an integer number (126045505026).

Almost surely, 2^668241248534 is an apocalyptic number.

668241248534 is a deficient number, since it is larger than the sum of its proper divisors (340122791674).

668241248534 is a wasteful number, since it uses less digits than its factorization.

668241248534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2000722470.

The product of its digits is 8847360, while the sum is 53.

The spelling of 668241248534 in words is "six hundred sixty-eight billion, two hundred forty-one million, two hundred forty-eight thousand, five hundred thirty-four".