6667047401 has 4 divisors (see below), whose sum is σ = 7619482752. Its totient is φ = 5714612052.

The previous prime is 6667047397. The next prime is 6667047407. The reversal of 6667047401 is 1047407666.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6667047401 - 2² = 6667047397 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6667047407) 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, 476217665 + ... + 476217678.

It is an arithmetic number, because the mean of its divisors is an integer number (1904870688).

Almost surely, 2^6667047401 is an apocalyptic number.

It is an amenable number.

6667047401 is a deficient number, since it is larger than the sum of its proper divisors (952435351).

6667047401 is an equidigital number, since it uses as much as digits as its factorization.

6667047401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 952435350.

The product of its (nonzero) digits is 169344, while the sum is 41.

The square root of 6667047401 is about 81651.9895715959. The cubic root of 6667047401 is about 1882.1078855525.

The spelling of 6667047401 in words is "six billion, six hundred sixty-seven million, forty-seven thousand, four hundred one".