667296400754 has 4 divisors (see below), whose sum is σ = 1000944601134. Its totient is φ = 333648200376.

The previous prime is 667296400739. The next prime is 667296400759. The reversal of 667296400754 is 457004692766.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 457004692766 = 2 ⋅228502346383.

It can be written as a sum of positive squares in only one way, i.e., 667023391225 + 273009529 = 816715^2 + 16523^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 667296400754.

It is not an unprimeable number, because it can be changed into a prime (667296400759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166824100187 + ... + 166824100190.

Almost surely, 2^667296400754 is an apocalyptic number.

667296400754 is a deficient number, since it is larger than the sum of its proper divisors (333648200380).

667296400754 is a wasteful number, since it uses less digits than its factorization.

667296400754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333648200379.

The product of its (nonzero) digits is 15240960, while the sum is 56.

The spelling of 667296400754 in words is "six hundred sixty-seven billion, two hundred ninety-six million, four hundred thousand, seven hundred fifty-four".