667422476381 has 8 divisors (see below), whose sum is σ = 668852570880. Its totient is φ = 665992535872.

The previous prime is 667422476363. The next prime is 667422476519. The reversal of 667422476381 is 183674224766.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-667422476381 is a prime.

It is a super-2 number, since 2×667422476381² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667422476341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14285846 + ... + 14332488.

It is an arithmetic number, because the mean of its divisors is an integer number (83606571360).

Almost surely, 2^667422476381 is an apocalyptic number.

It is an amenable number.

667422476381 is a deficient number, since it is larger than the sum of its proper divisors (1430094499).

667422476381 is a wasteful number, since it uses less digits than its factorization.

667422476381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76995.

The product of its digits is 16257024, while the sum is 56.

The spelling of 667422476381 in words is "six hundred sixty-seven billion, four hundred twenty-two million, four hundred seventy-six thousand, three hundred eighty-one".