787981567 has 2 divisors, whose sum is σ = 787981568. Its totient is φ = 787981566.

The previous prime is 787981561. The next prime is 787981673. The reversal of 787981567 is 765189787.

It is a weak prime.

It is an emirp because it is prime and its reverse (765189787) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 787981567 - 2²³ = 779592959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (787981561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 393990783 + 393990784.

It is an arithmetic number, because the mean of its divisors is an integer number (393990784).

Almost surely, 2^787981567 is an apocalyptic number.

787981567 is a deficient number, since it is larger than the sum of its proper divisors (1).

787981567 is an equidigital number, since it uses as much as digits as its factorization.

787981567 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5927040, while the sum is 58.

The square root of 787981567 is about 28071.0093690982. The cubic root of 787981567 is about 923.6455724644.

The spelling of 787981567 in words is "seven hundred eighty-seven million, nine hundred eighty-one thousand, five hundred sixty-seven".