667705220315 has 16 divisors (see below), whose sum is σ = 923813650368. Its totient is φ = 453803191296.

The previous prime is 667705220311. The next prime is 667705220431. The reversal of 667705220315 is 513022507766.

It is not a de Polignac number, because 667705220315 - 2² = 667705220311 is a prime.

It is a super-2 number, since 2×667705220315² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (667705220311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84408842 + ... + 84416751.

It is an arithmetic number, because the mean of its divisors is an integer number (57738353148).

Almost surely, 2^667705220315 is an apocalyptic number.

667705220315 is a deficient number, since it is larger than the sum of its proper divisors (256108430053).

667705220315 is a wasteful number, since it uses less digits than its factorization.

667705220315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168825718.

The product of its (nonzero) digits is 529200, while the sum is 44.

The spelling of 667705220315 in words is "six hundred sixty-seven billion, seven hundred five million, two hundred twenty thousand, three hundred fifteen".