765961 has 4 divisors (see below), whose sum is σ = 875392. Its totient is φ = 656532.

The previous prime is 765953. The next prime is 765971. The reversal of 765961 is 169567.

765961 = 114² + 115² + ... + 155².

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 765961 - 2³ = 765953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (765931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54705 + ... + 54718.

It is an arithmetic number, because the mean of its divisors is an integer number (218848).

2⁷⁶⁵⁹⁶¹ is an apocalyptic number.

It is an amenable number.

765961 is a deficient number, since it is larger than the sum of its proper divisors (109431).

765961 is a wasteful number, since it uses less digits than its factorization.

765961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109430.

The product of its digits is 11340, while the sum is 34.

The square root of 765961 is about 875.1919789395. The cubic root of 765961 is about 91.4960233971.

The spelling of 765961 in words is "seven hundred sixty-five thousand, nine hundred sixty-one".