667145730174 has 64 divisors (see below), whose sum is σ = 1664103923712. Its totient is φ = 173225052000.

The previous prime is 667145730137. The next prime is 667145730221. The reversal of 667145730174 is 471037541766.

It is a super-2 number, since 2×667145730174² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1105599 + ... + 1598949.

It is an arithmetic number, because the mean of its divisors is an integer number (26001623808).

Almost surely, 2^667145730174 is an apocalyptic number.

667145730174 is an abundant number, since it is smaller than the sum of its proper divisors (996958193538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

667145730174 is a wasteful number, since it uses less digits than its factorization.

667145730174 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496301.

The product of its (nonzero) digits is 2963520, while the sum is 51.

The spelling of 667145730174 in words is "six hundred sixty-seven billion, one hundred forty-five million, seven hundred thirty thousand, one hundred seventy-four".