694835641 has 4 divisors (see below), whose sum is σ = 699907572. Its totient is φ = 689763712.

The previous prime is 694835629. The next prime is 694835657. The reversal of 694835641 is 146538496.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 610287616 + 84548025 = 24704^2 + 9195^2 .

It is a cyclic number.

It is not a de Polignac number, because 694835641 - 2¹⁵ = 694802873 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 694835591 and 694835600.

It is not an unprimeable number, because it can be changed into a prime (694836641) 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, 2535760 + ... + 2536033.

It is an arithmetic number, because the mean of its divisors is an integer number (174976893).

Almost surely, 2^694835641 is an apocalyptic number.

It is an amenable number.

694835641 is a deficient number, since it is larger than the sum of its proper divisors (5071931).

694835641 is a wasteful number, since it uses less digits than its factorization.

694835641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5071930.

The product of its digits is 622080, while the sum is 46.

The square root of 694835641 is about 26359.7352224942. The cubic root of 694835641 is about 885.7150597870.

The spelling of 694835641 in words is "six hundred ninety-four million, eight hundred thirty-five thousand, six hundred forty-one".