704743631 has 4 divisors (see below), whose sum is σ = 704800272. Its totient is φ = 704686992.

The previous prime is 704743603. The next prime is 704743661. The reversal of 704743631 is 136347407.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-704743631 is a prime.

It is a super-2 number, since 2×704743631² = 993327170870128322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 704743591 and 704743600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (704743661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 635 + ... + 37548.

It is an arithmetic number, because the mean of its divisors is an integer number (176200068).

Almost surely, 2^704743631 is an apocalyptic number.

704743631 is a deficient number, since it is larger than the sum of its proper divisors (56641).

704743631 is a wasteful number, since it uses less digits than its factorization.

704743631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56640.

The product of its (nonzero) digits is 42336, while the sum is 35.

The square root of 704743631 is about 26547.0079481662. The cubic root of 704743631 is about 889.9051495939.

The spelling of 704743631 in words is "seven hundred four million, seven hundred forty-three thousand, six hundred thirty-one".