694238639741 has 4 divisors (see below), whose sum is σ = 695738075712. Its totient is φ = 692739203772.

The previous prime is 694238639719. The next prime is 694238639749. The reversal of 694238639741 is 147936832496.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-694238639741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (694238639749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 749717291 + ... + 749718216.

It is an arithmetic number, because the mean of its divisors is an integer number (173934518928).

Almost surely, 2^694238639741 is an apocalyptic number.

It is an amenable number.

694238639741 is a deficient number, since it is larger than the sum of its proper divisors (1499435971).

694238639741 is a wasteful number, since it uses less digits than its factorization.

694238639741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1499435970.

The product of its digits is 47029248, while the sum is 62.

The spelling of 694238639741 in words is "six hundred ninety-four billion, two hundred thirty-eight million, six hundred thirty-nine thousand, seven hundred forty-one".