667234880785 has 16 divisors (see below), whose sum is σ = 873828248832. Its totient is φ = 485063324800.

The previous prime is 667234880747. The next prime is 667234880791. The reversal of 667234880785 is 587088432766.

It is not a de Polignac number, because 667234880785 - 2¹⁹ = 667234356497 is a prime.

It is a super-2 number, since 2×667234880785² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2344276 + ... + 2613445.

It is an arithmetic number, because the mean of its divisors is an integer number (54614265552).

Almost surely, 2^667234880785 is an apocalyptic number.

It is an amenable number.

667234880785 is a deficient number, since it is larger than the sum of its proper divisors (206593368047).

667234880785 is a wasteful number, since it uses less digits than its factorization.

667234880785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4960184.

The product of its (nonzero) digits is 108380160, while the sum is 64.

The spelling of 667234880785 in words is "six hundred sixty-seven billion, two hundred thirty-four million, eight hundred eighty thousand, seven hundred eighty-five".