6513988 has 12 divisors (see below), whose sum is σ = 12276460. Its totient is φ = 3006432.

The previous prime is 6513973. The next prime is 6514003. The reversal of 6513988 is 8893156.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (6513973) and next prime (6514003).

It can be written as a sum of positive squares in 2 ways, for example, as 2585664 + 3928324 = 1608^2 + 1982^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 6513988.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62583 + ... + 62686.

Almost surely, 2^6513988 is an apocalyptic number.

It is an amenable number.

6513988 is a deficient number, since it is larger than the sum of its proper divisors (5762472).

6513988 is a wasteful number, since it uses less digits than its factorization.

6513988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125286 (or 125284 counting only the distinct ones).

The product of its digits is 51840, while the sum is 40.

The square root of 6513988 is about 2552.2515550000. The cubic root of 6513988 is about 186.7593346576.

The spelling of 6513988 in words is "six million, five hundred thirteen thousand, nine hundred eighty-eight".