660767067 has 48 divisors (see below), whose sum is σ = 1040745888. Its totient is φ = 402416640.

The previous prime is 660767057. The next prime is 660767071. The reversal of 660767067 is 760767066.

It is a happy number.

It is not a de Polignac number, because 660767067 - 2¹¹ = 660765019 is a prime.

It is a super-2 number, since 2×660767067² = 873226233663564978, which contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (660767017) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 774213 + ... + 775065.

It is an arithmetic number, because the mean of its divisors is an integer number (21682206).

Almost surely, 2^660767067 is an apocalyptic number.

660767067 is a deficient number, since it is larger than the sum of its proper divisors (379978821).

660767067 is a wasteful number, since it uses less digits than its factorization.

660767067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1020 (or 1017 counting only the distinct ones).

The product of its (nonzero) digits is 444528, while the sum is 45.

The square root of 660767067 is about 25705.3898433772. The cubic root of 660767067 is about 870.9959383322.

Subtracting 660767067 from its reverse (760767066), we obtain a palindrome (99999999).

The spelling of 660767067 in words is "six hundred sixty million, seven hundred sixty-seven thousand, sixty-seven".