782480642 has 4 divisors (see below), whose sum is σ = 1173720966. Its totient is φ = 391240320.

The previous prime is 782480609. The next prime is 782480653. The reversal of 782480642 is 246084287.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 246084287 = 3331 ⋅73877.

It can be written as a sum of positive squares in only one way, i.e., 586172521 + 196308121 = 24211^2 + 14011^2 .

It is a super-2 number, since 2×782480642² = 1224551910209464328, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 782480642.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 195620159 + ... + 195620162.

Almost surely, 2^782480642 is an apocalyptic number.

782480642 is a deficient number, since it is larger than the sum of its proper divisors (391240324).

782480642 is a wasteful number, since it uses less digits than its factorization.

782480642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391240323.

The product of its (nonzero) digits is 172032, while the sum is 41.

The square root of 782480642 is about 27972.8554495246. The cubic root of 782480642 is about 921.4912181729.

The spelling of 782480642 in words is "seven hundred eighty-two million, four hundred eighty thousand, six hundred forty-two".