402767 has 2 divisors, whose sum is σ = 402768. Its totient is φ = 402766.

The previous prime is 402763. The next prime is 402769. The reversal of 402767 is 767204.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 402767 - 2² = 402763 is a prime.

Together with 402769, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201383 + 201384.

It is an arithmetic number, because the mean of its divisors is an integer number (201384).

2⁴⁰²⁷⁶⁷ is an apocalyptic number.

402767 is a deficient number, since it is larger than the sum of its proper divisors (1).

402767 is an equidigital number, since it uses as much as digits as its factorization.

402767 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2352, while the sum is 26.

The square root of 402767 is about 634.6392676159. The cubic root of 402767 is about 73.8501349739.

The spelling of 402767 in words is "four hundred two thousand, seven hundred sixty-seven".