5649997 has 2 divisors, whose sum is σ = 5649998. Its totient is φ = 5649996.

The previous prime is 5649977. The next prime is 5650009. The reversal of 5649997 is 7999465.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4691556 + 958441 = 2166^2 + 979^2 .

It is a cyclic number.

It is not a de Polignac number, because 5649997 - 2¹⁹ = 5125709 is a prime.

It is a super-2 number, since 2×5649997² = 63844932200018, which contains 22 as substring.

5649997 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 5649997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5649907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2824998 + 2824999.

It is an arithmetic number, because the mean of its divisors is an integer number (2824999).

Almost surely, 2^5649997 is an apocalyptic number.

It is an amenable number.

5649997 is a deficient number, since it is larger than the sum of its proper divisors (1).

5649997 is an equidigital number, since it uses as much as digits as its factorization.

5649997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 612360, while the sum is 49.

The square root of 5649997 is about 2376.9722337461. The cubic root of 5649997 is about 178.1077179088.

The spelling of 5649997 in words is "five million, six hundred forty-nine thousand, nine hundred ninety-seven".