5698991 has 4 divisors (see below), whose sum is σ = 5703792. Its totient is φ = 5694192.

The previous prime is 5698967. The next prime is 5698997. The reversal of 5698991 is 1998965.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1998965 = 5 ⋅399793.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5698991 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 (5698997) 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, 830 + ... + 3476.

It is an arithmetic number, because the mean of its divisors is an integer number (1425948).

Almost surely, 2^5698991 is an apocalyptic number.

5698991 is a deficient number, since it is larger than the sum of its proper divisors (4801).

5698991 is a wasteful number, since it uses less digits than its factorization.

5698991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4800.

The product of its digits is 174960, while the sum is 47.

The square root of 5698991 is about 2387.2559561136. The cubic root of 5698991 is about 178.6210578398.

The spelling of 5698991 in words is "five million, six hundred ninety-eight thousand, nine hundred ninety-one".