780964 has 6 divisors (see below), whose sum is σ = 1366694. Its totient is φ = 390480.

The previous prime is 780961. The next prime is 780971. The reversal of 780964 is 469087.

It can be written as a sum of positive squares in only one way, i.e., 550564 + 230400 = 742^2 + 480^2 .

It is not an unprimeable number, because it can be changed into a prime (780961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97617 + ... + 97624.

2⁷⁸⁰⁹⁶⁴ is an apocalyptic number.

It is an amenable number.

780964 is a deficient number, since it is larger than the sum of its proper divisors (585730).

780964 is a wasteful number, since it uses less digits than its factorization.

780964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195245 (or 195243 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 780964 is about 883.7216756423. The cubic root of 780964 is about 92.0895473422.

The spelling of 780964 in words is "seven hundred eighty thousand, nine hundred sixty-four".