769987 has 2 divisors, whose sum is σ = 769988. Its totient is φ = 769986.

The previous prime is 769973. The next prime is 769997. The reversal of 769987 is 789967.

It is a strong prime.

It is an emirp because it is prime and its reverse (789967) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-769987 is a prime.

769987 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (769927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 384993 + 384994.

It is an arithmetic number, because the mean of its divisors is an integer number (384994).

2⁷⁶⁹⁹⁸⁷ is an apocalyptic number.

769987 is a deficient number, since it is larger than the sum of its proper divisors (1).

769987 is an equidigital number, since it uses as much as digits as its factorization.

769987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 190512, while the sum is 46.

The square root of 769987 is about 877.4890312705. The cubic root of 769987 is about 91.6560487242.

The spelling of 769987 in words is "seven hundred sixty-nine thousand, nine hundred eighty-seven".