667670742465 has 16 divisors (see below), whose sum is σ = 1073336099136. Its totient is φ = 354403425600.

The previous prime is 667670742463. The next prime is 667670742481. The reversal of 667670742465 is 564247076766.

It is not a de Polignac number, because 667670742465 - 2¹ = 667670742463 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 667670742399 and 667670742408.

It is not an unprimeable number, because it can be changed into a prime (667670742461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105474046 + ... + 105480375.

It is an arithmetic number, because the mean of its divisors is an integer number (67083506196).

Almost surely, 2^667670742465 is an apocalyptic number.

It is an amenable number.

667670742465 is a deficient number, since it is larger than the sum of its proper divisors (405665356671).

667670742465 is a wasteful number, since it uses less digits than its factorization.

667670742465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210954640.

The product of its (nonzero) digits is 71124480, while the sum is 60.

The spelling of 667670742465 in words is "six hundred sixty-seven billion, six hundred seventy million, seven hundred forty-two thousand, four hundred sixty-five".