767921 has 8 divisors (see below), whose sum is σ = 957504. Its totient is φ = 598320.

The previous prime is 767909. The next prime is 767951. The reversal of 767921 is 129767.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 767921 - 2⁶ = 767857 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (767951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4910 + ... + 5063.

It is an arithmetic number, because the mean of its divisors is an integer number (119688).

2⁷⁶⁷⁹²¹ is an apocalyptic number.

It is an amenable number.

767921 is a deficient number, since it is larger than the sum of its proper divisors (189583).

767921 is a wasteful number, since it uses less digits than its factorization.

767921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9991.

The product of its digits is 5292, while the sum is 32.

The square root of 767921 is about 876.3110178470. The cubic root of 767921 is about 91.5739992818.

It can be divided in two parts, 76 and 7921, that added together give a palindrome (7997).

The spelling of 767921 in words is "seven hundred sixty-seven thousand, nine hundred twenty-one".