667076740744 has 8 divisors (see below), whose sum is σ = 1250768888910. Its totient is φ = 333538370368.

The previous prime is 667076740739. The next prime is 667076740817. The reversal of 667076740744 is 447047670766.

It can be written as a sum of positive squares in only one way, i.e., 400575068100 + 266501672644 = 632910^2 + 516238^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41692296289 + ... + 41692296304.

Almost surely, 2^667076740744 is an apocalyptic number.

It is an amenable number.

667076740744 is a deficient number, since it is larger than the sum of its proper divisors (583692148166).

667076740744 is a wasteful number, since it uses less digits than its factorization.

667076740744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83384592599 (or 83384592595 counting only the distinct ones).

The product of its (nonzero) digits is 33191424, while the sum is 58.

The spelling of 667076740744 in words is "six hundred sixty-seven billion, seventy-six million, seven hundred forty thousand, seven hundred forty-four".