667926441 has 24 divisors (see below), whose sum is σ = 1187426240. Its totient is φ = 352312416.

The previous prime is 667926431. The next prime is 667926461. The reversal of 667926441 is 144629766.

It is not a de Polignac number, because 667926441 - 2⁵ = 667926409 is a prime.

It is a super-2 number, since 2×667926441² = 892251461173852962, which contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (667926431) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 406951 + ... + 408588.

Almost surely, 2^667926441 is an apocalyptic number.

It is an amenable number.

667926441 is a deficient number, since it is larger than the sum of its proper divisors (519499799).

667926441 is a wasteful number, since it uses less digits than its factorization.

667926441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 815565 (or 815562 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 667926441 is about 25844.2728858832. The cubic root of 667926441 is about 874.1303756236.

The spelling of 667926441 in words is "six hundred sixty-seven million, nine hundred twenty-six thousand, four hundred forty-one".