781474496 has 168 divisors, whose sum is σ = 1886443776. Its totient is φ = 317870080.

The previous prime is 781474481. The next prime is 781474511. The reversal of 781474496 is 694474187.

It is an interprime number because it is at equal distance from previous prime (781474481) and next prime (781474511).

It is a super-2 number, since 2×781474496² = 1221404775796908032, which contains 22 as substring.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 4679405 + ... + 4679571.

It is an arithmetic number, because the mean of its divisors is an integer number (11228832).

Almost surely, 2^781474496 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 781474496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (943221888).

781474496 is an abundant number, since it is smaller than the sum of its proper divisors (1104969280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

781474496 is a wasteful number, since it uses less digits than its factorization.

781474496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247 (or 220 counting only the distinct ones).

The product of its digits is 1354752, while the sum is 50.

The square root of 781474496 is about 27954.8653368246. The cubic root of 781474496 is about 921.0960849139.

The spelling of 781474496 in words is "seven hundred eighty-one million, four hundred seventy-four thousand, four hundred ninety-six".