667795143 has 4 divisors (see below), whose sum is σ = 890393528. Its totient is φ = 445196760.

The previous prime is 667795127. The next prime is 667795153. The reversal of 667795143 is 341597766.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 667795143 - 2⁴ = 667795127 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 667795092 and 667795101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667795103) 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, 111299188 + ... + 111299193.

It is an arithmetic number, because the mean of its divisors is an integer number (222598382).

Almost surely, 2^667795143 is an apocalyptic number.

667795143 is a deficient number, since it is larger than the sum of its proper divisors (222598385).

667795143 is a wasteful number, since it uses less digits than its factorization.

667795143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222598384.

The product of its digits is 952560, while the sum is 48.

The square root of 667795143 is about 25841.7325851035. The cubic root of 667795143 is about 874.0730943202.

The spelling of 667795143 in words is "six hundred sixty-seven million, seven hundred ninety-five thousand, one hundred forty-three".