3493606691 has 2 divisors, whose sum is σ = 3493606692. Its totient is φ = 3493606690.

The previous prime is 3493606687. The next prime is 3493606729. The reversal of 3493606691 is 1966063943.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3493606691 - 2² = 3493606687 is a prime.

It is a super-2 number, since 2×3493606691² = 24410575422799938962, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (3493606621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1746803345 + 1746803346.

It is an arithmetic number, because the mean of its divisors is an integer number (1746803346).

Almost surely, 2^3493606691 is an apocalyptic number.

3493606691 is a deficient number, since it is larger than the sum of its proper divisors (1).

3493606691 is an equidigital number, since it uses as much as digits as its factorization.

3493606691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 629856, while the sum is 47.

The square root of 3493606691 is about 59106.7398102788. The cubic root of 3493606691 is about 1517.3694533451.

The spelling of 3493606691 in words is "three billion, four hundred ninety-three million, six hundred six thousand, six hundred ninety-one".