780471 has 6 divisors (see below), whose sum is σ = 1127360. Its totient is φ = 520308.

The previous prime is 780469. The next prime is 780499. The reversal of 780471 is 174087.

It is not a de Polignac number, because 780471 - 2¹ = 780469 is a prime.

It is a super-3 number, since 3×780471³ = 1426236565237281333, which contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (780401) 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 5 ways as a sum of consecutive naturals, for example, 43351 + ... + 43368.

2⁷⁸⁰⁴⁷¹ is an apocalyptic number.

780471 is a deficient number, since it is larger than the sum of its proper divisors (346889).

780471 is a wasteful number, since it uses less digits than its factorization.

780471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86725 (or 86722 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 27.

The square root of 780471 is about 883.4426976324. The cubic root of 780471 is about 92.0701654401.

It can be divided in two parts, 7804 and 71, that added together give a triangular number (7875 = T₁₂₅).

The spelling of 780471 in words is "seven hundred eighty thousand, four hundred seventy-one".