780957 has 12 divisors (see below), whose sum is σ = 1187680. Its totient is φ = 493128.

The previous prime is 780953. The next prime is 780961. The reversal of 780957 is 759087.

It is an interprime number because it is at equal distance from previous prime (780953) and next prime (780961).

It is not a de Polignac number, because 780957 - 2² = 780953 is a prime.

It is an Ulam number.

It is a Duffinian number.

780957 is a lucky number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 780957.

It is not an unprimeable number, because it can be changed into a prime (780953) 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 11 ways as a sum of consecutive naturals, for example, 2113 + ... + 2454.

2⁷⁸⁰⁹⁵⁷ is an apocalyptic number.

It is an amenable number.

780957 is a deficient number, since it is larger than the sum of its proper divisors (406723).

780957 is a wasteful number, since it uses less digits than its factorization.

780957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4592 (or 4589 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 36.

The square root of 780957 is about 883.7177151104. The cubic root of 780957 is about 92.0892721999.

The spelling of 780957 in words is "seven hundred eighty thousand, nine hundred fifty-seven".