667441408623 has 64 divisors (see below), whose sum is σ = 1023882854400. Its totient is φ = 382998591360.

The previous prime is 667441408607. The next prime is 667441408633. The reversal of 667441408623 is 326804144766.

It is not a de Polignac number, because 667441408623 - 2⁴ = 667441408607 is a prime.

It is a super-2 number, since 2×667441408623² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667441408633) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 14275198 + ... + 14321876.

It is an arithmetic number, because the mean of its divisors is an integer number (15998169600).

Almost surely, 2^667441408623 is an apocalyptic number.

667441408623 is a deficient number, since it is larger than the sum of its proper divisors (356441445777).

667441408623 is a wasteful number, since it uses less digits than its factorization.

667441408623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47012.

The product of its (nonzero) digits is 4644864, while the sum is 51.

The spelling of 667441408623 in words is "six hundred sixty-seven billion, four hundred forty-one million, four hundred eight thousand, six hundred twenty-three".