775964 has 36 divisors (see below), whose sum is σ = 1637496. Its totient is φ = 320544.

The previous prime is 775963. The next prime is 775987. The reversal of 775964 is 469577.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (775963) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7199 + ... + 7305.

It is an arithmetic number, because the mean of its divisors is an integer number (45486).

2⁷⁷⁵⁹⁶⁴ is an apocalyptic number.

775964 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 775964, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (818748).

775964 is an abundant number, since it is smaller than the sum of its proper divisors (861532).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

775964 is a wasteful number, since it uses less digits than its factorization.

775964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162 (or 153 counting only the distinct ones).

The product of its digits is 52920, while the sum is 38.

The square root of 775964 is about 880.8881881374. Note that the first 3 decimals coincide. The cubic root of 775964 is about 91.8925967807.

The spelling of 775964 in words is "seven hundred seventy-five thousand, nine hundred sixty-four".