6522987 has 8 divisors (see below), whose sum is σ = 8709120. Its totient is φ = 4342760.

The previous prime is 6522979. The next prime is 6523001. The reversal of 6522987 is 7892256.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6522987 - 2³ = 6522979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6522937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3562 + ... + 5072.

It is an arithmetic number, because the mean of its divisors is an integer number (1088640).

Almost surely, 2^6522987 is an apocalyptic number.

6522987 is a deficient number, since it is larger than the sum of its proper divisors (2186133).

6522987 is a wasteful number, since it uses less digits than its factorization.

6522987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2953.

The product of its digits is 60480, while the sum is 39.

The square root of 6522987 is about 2554.0138997273. The cubic root of 6522987 is about 186.8452970468.

The spelling of 6522987 in words is "six million, five hundred twenty-two thousand, nine hundred eighty-seven".