704780388 has 72 divisors (see below), whose sum is σ = 1984764600. Its totient is φ = 209373696.

The previous prime is 704780387. The next prime is 704780389. The reversal of 704780388 is 883087407.

It is an interprime number because it is at equal distance from previous prime (704780387) and next prime (704780389).

It can be written as a sum of positive squares in 4 ways, for example, as 170615844 + 534164544 = 13062^2 + 23112^2 .

It is not an unprimeable number, because it can be changed into a prime (704780387) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12393 + ... + 39536.

It is an arithmetic number, because the mean of its divisors is an integer number (27566175).

Almost surely, 2^704780388 is an apocalyptic number.

704780388 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

704780388 is an abundant number, since it is smaller than the sum of its proper divisors (1279984212).

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

704780388 is a wasteful number, since it uses less digits than its factorization.

704780388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51981 (or 51976 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 45.

The square root of 704780388 is about 26547.7002393804. The cubic root of 704780388 is about 889.9206207872.

The spelling of 704780388 in words is "seven hundred four million, seven hundred eighty thousand, three hundred eighty-eight".