667703322541 has 4 divisors (see below), whose sum is σ = 680301498492. Its totient is φ = 655105146592.

The previous prime is 667703322509. The next prime is 667703322577. The reversal of 667703322541 is 145223307766.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 145223307766 = 2 ⋅72611653883.

It can be written as a sum of positive squares in 2 ways, for example, as 561592866025 + 106110456516 = 749395^2 + 325746^2 .

It is not a de Polignac number, because 667703322541 - 2⁵ = 667703322509 is a prime.

It is a super-3 number, since 3×667703322541³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 667703322491 and 667703322500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667703322581) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6299087896 + ... + 6299088001.

It is an arithmetic number, because the mean of its divisors is an integer number (170075374623).

Almost surely, 2^667703322541 is an apocalyptic number.

It is an amenable number.

667703322541 is a deficient number, since it is larger than the sum of its proper divisors (12598175951).

667703322541 is a wasteful number, since it uses less digits than its factorization.

667703322541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12598175950.

The product of its (nonzero) digits is 1270080, while the sum is 46.

The spelling of 667703322541 in words is "six hundred sixty-seven billion, seven hundred three million, three hundred twenty-two thousand, five hundred forty-one".