694983549691 has 2 divisors, whose sum is σ = 694983549692. Its totient is φ = 694983549690.

The previous prime is 694983549649. The next prime is 694983549761. The reversal of 694983549691 is 196945389496.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-694983549691 is a prime.

It is a super-2 number, since 2×694983549691² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (694983549791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 347491774845 + 347491774846.

It is an arithmetic number, because the mean of its divisors is an integer number (347491774846).

Almost surely, 2^694983549691 is an apocalyptic number.

694983549691 is a deficient number, since it is larger than the sum of its proper divisors (1).

694983549691 is an equidigital number, since it uses as much as digits as its factorization.

694983549691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 453496320, while the sum is 73.

The spelling of 694983549691 in words is "six hundred ninety-four billion, nine hundred eighty-three million, five hundred forty-nine thousand, six hundred ninety-one".