782280473 has 4 divisors (see below), whose sum is σ = 842455908. Its totient is φ = 722105040.

The previous prime is 782280437. The next prime is 782280479. The reversal of 782280473 is 374082287.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 286015744 + 496264729 = 16912^2 + 22277^2 .

It is a cyclic number.

It is not a de Polignac number, because 782280473 - 2¹² = 782276377 is a prime.

It is a super-2 number, since 2×782280473² = 1223925476874207458, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 782280473.

It is not an unprimeable number, because it can be changed into a prime (782280479) 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, 30087698 + ... + 30087723.

It is an arithmetic number, because the mean of its divisors is an integer number (210613977).

Almost surely, 2^782280473 is an apocalyptic number.

It is an amenable number.

782280473 is a deficient number, since it is larger than the sum of its proper divisors (60175435).

782280473 is a wasteful number, since it uses less digits than its factorization.

782280473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60175434.

The product of its (nonzero) digits is 150528, while the sum is 41.

The square root of 782280473 is about 27969.2773056438. The cubic root of 782280473 is about 921.4126348842.

The spelling of 782280473 in words is "seven hundred eighty-two million, two hundred eighty thousand, four hundred seventy-three".