427861667 has 2 divisors, whose sum is σ = 427861668. Its totient is φ = 427861666.

The previous prime is 427861639. The next prime is 427861669. The reversal of 427861667 is 766168724.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 427861667 - 2¹⁴ = 427845283 is a prime.

Together with 427861669, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (427861669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213930833 + 213930834.

It is an arithmetic number, because the mean of its divisors is an integer number (213930834).

Almost surely, 2^427861667 is an apocalyptic number.

427861667 is a deficient number, since it is larger than the sum of its proper divisors (1).

427861667 is an equidigital number, since it uses as much as digits as its factorization.

427861667 is an evil number, because the sum of its binary digits is even.

The product of its digits is 677376, while the sum is 47.

The square root of 427861667 is about 20684.8173064207. The cubic root of 427861667 is about 753.5310044401.

The spelling of 427861667 in words is "four hundred twenty-seven million, eight hundred sixty-one thousand, six hundred sixty-seven".