668053456754 has 16 divisors (see below), whose sum is σ = 1061042710968. Its totient is φ = 314373169152.

The previous prime is 668053456751. The next prime is 668053456817. The reversal of 668053456754 is 457654350866.

It can be written as a sum of positive squares in 4 ways, for example, as 612486238225 + 55567218529 = 782615^2 + 235727^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 668053456693 and 668053456702.

It is not an unprimeable number, because it can be changed into a prime (668053456751) 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, 2958482 + ... + 3176274.

Almost surely, 2^668053456754 is an apocalyptic number.

668053456754 is a deficient number, since it is larger than the sum of its proper divisors (392989254214).

668053456754 is a wasteful number, since it uses less digits than its factorization.

668053456754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308029.

The product of its (nonzero) digits is 72576000, while the sum is 59.

The spelling of 668053456754 in words is "six hundred sixty-eight billion, fifty-three million, four hundred fifty-six thousand, seven hundred fifty-four".