704372661 has 12 divisors (see below), whose sum is σ = 1042243020. Its totient is φ = 458128320.

The previous prime is 704372659. The next prime is 704372671. The reversal of 704372661 is 166273407.

It can be written as a sum of positive squares in 2 ways, for example, as 211266225 + 493106436 = 14535^2 + 22206^2 .

It is not a de Polignac number, because 704372661 - 2¹ = 704372659 is a prime.

It is a super-2 number, since 2×704372661² = 992281691128441842, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (704372671) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 954066 + ... + 954803.

It is an arithmetic number, because the mean of its divisors is an integer number (86853585).

Almost surely, 2^704372661 is an apocalyptic number.

It is an amenable number.

704372661 is a deficient number, since it is larger than the sum of its proper divisors (337870359).

704372661 is a wasteful number, since it uses less digits than its factorization.

704372661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1908916 (or 1908913 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

The square root of 704372661 is about 26540.0199886888. The cubic root of 704372661 is about 889.7489764641.

The spelling of 704372661 in words is "seven hundred four million, three hundred seventy-two thousand, six hundred sixty-one".