785220004 has 12 divisors (see below), whose sum is σ = 1454966604. Its totient is φ = 369515264.

The previous prime is 785219993. The next prime is 785220103. The reversal of 785220004 is 400022587.

It can be written as a sum of positive squares in 2 ways, for example, as 729000000 + 56220004 = 27000^2 + 7498^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5773609 + ... + 5773744.

It is an arithmetic number, because the mean of its divisors is an integer number (121247217).

Almost surely, 2^785220004 is an apocalyptic number.

It is an amenable number.

785220004 is a deficient number, since it is larger than the sum of its proper divisors (669746600).

785220004 is a wasteful number, since it uses less digits than its factorization.

785220004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11547374 (or 11547372 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 785220004 is about 28021.7773169369. Note that the first 3 decimals coincide. The cubic root of 785220004 is about 922.5653056590.

The spelling of 785220004 in words is "seven hundred eighty-five million, two hundred twenty thousand, four".