787667 has 2 divisors, whose sum is σ = 787668. Its totient is φ = 787666.

The previous prime is 787649. The next prime is 787697. The reversal of 787667 is 766787.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 787667 - 2¹² = 783571 is a prime.

It is not a weakly prime, because it can be changed into another prime (787697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 393833 + 393834.

It is an arithmetic number, because the mean of its divisors is an integer number (393834).

2⁷⁸⁷⁶⁶⁷ is an apocalyptic number.

787667 is a deficient number, since it is larger than the sum of its proper divisors (1).

787667 is an equidigital number, since it uses as much as digits as its factorization.

787667 is an evil number, because the sum of its binary digits is even.

The product of its digits is 98784, while the sum is 41.

The square root of 787667 is about 887.5060563174. The cubic root of 787667 is about 92.3522647809.

The spelling of 787667 in words is "seven hundred eighty-seven thousand, six hundred sixty-seven".