6299649 has 6 divisors (see below), whose sum is σ = 9099506. Its totient is φ = 4199760.

The previous prime is 6299627. The next prime is 6299651. The reversal of 6299649 is 9469926.

It can be written as a sum of positive squares in only one way, i.e., 5489649 + 810000 = 2343^2 + 900^2 .

It is not a de Polignac number, because 6299649 - 2⁷ = 6299521 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6299669) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 349972 + ... + 349989.

It is a Proth number, since it is equal to 769 ⋅ 2¹³ + 1 and 769 < 2¹³.

Almost surely, 2^6299649 is an apocalyptic number.

It is an amenable number.

6299649 is a deficient number, since it is larger than the sum of its proper divisors (2799857).

6299649 is a wasteful number, since it uses less digits than its factorization.

6299649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 699967 (or 699964 counting only the distinct ones).

The product of its digits is 209952, while the sum is 45.

The square root of 6299649 is about 2509.9101577547. The cubic root of 6299649 is about 184.6880449965.

The spelling of 6299649 in words is "six million, two hundred ninety-nine thousand, six hundred forty-nine".