704424681 has 21 divisors (see below), whose sum is σ = 1057229389. Its totient is φ = 469138716.

The previous prime is 704424653. The next prime is 704424683. The reversal of 704424681 is 186424407.

The square root of 704424681 is 26541.

It is a perfect power (a square), and thus also a powerful number.

It is a de Polignac number, because none of the positive numbers 2^k-704424681 is a prime.

It is a super-2 number, since 2×704424681² = 992428262403903522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (704424683) by changing a digit.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 716116 + ... + 717098.

Almost surely, 2^704424681 is an apocalyptic number.

704424681 is the 26541-st square number.

704424681 is the 13271-st centered octagonal number.

It is an amenable number.

704424681 is a deficient number, since it is larger than the sum of its proper divisors (352804708).

704424681 is an frugal number, since it uses more digits than its factorization.

704424681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1984 (or 986 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The cubic root of 704424681 is about 889.7708794542.

Multiplying 704424681 by its sum of digits (36), we get a square (25359288516 = 159246²).

The spelling of 704424681 in words is "seven hundred four million, four hundred twenty-four thousand, six hundred eighty-one".