767881 has 2 divisors, whose sum is σ = 767882. Its totient is φ = 767880.

The previous prime is 767869. The next prime is 767909. The reversal of 767881 is 188767.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 672400 + 95481 = 820^2 + 309^2 .

It is an emirp because it is prime and its reverse (188767) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 767881 - 2¹⁵ = 735113 is a prime.

It is a super-2 number, since 2×767881² = 1179282460322, which contains 22 as substring.

It is a Chen prime.

767881 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 767881.

It is not a weakly prime, because it can be changed into another prime (767831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 383940 + 383941.

It is an arithmetic number, because the mean of its divisors is an integer number (383941).

2⁷⁶⁷⁸⁸¹ is an apocalyptic number.

It is an amenable number.

767881 is a deficient number, since it is larger than the sum of its proper divisors (1).

767881 is an equidigital number, since it uses as much as digits as its factorization.

767881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18816, while the sum is 37.

The square root of 767881 is about 876.2881946027. The cubic root of 767881 is about 91.5724092643.

The spelling of 767881 in words is "seven hundred sixty-seven thousand, eight hundred eighty-one".