704728690 has 16 divisors (see below), whose sum is σ = 1269739800. Its totient is φ = 281618560.

The previous prime is 704728679. The next prime is 704728697. The reversal of 704728690 is 96827407.

It can be written as a sum of positive squares in 4 ways, for example, as 693216241 + 11512449 = 26329^2 + 3393^2 .

It is a super-2 number, since 2×704728690² = 993285053018232200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (704728697) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23101 + ... + 44080.

Almost surely, 2^704728690 is an apocalyptic number.

704728690 is a deficient number, since it is larger than the sum of its proper divisors (565011110).

704728690 is a wasteful number, since it uses less digits than its factorization.

704728690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68237.

The product of its (nonzero) digits is 169344, while the sum is 43.

The square root of 704728690 is about 26546.7265401970. The cubic root of 704728690 is about 889.8988607033.

The spelling of 704728690 in words is "seven hundred four million, seven hundred twenty-eight thousand, six hundred ninety".