6520988 has 6 divisors (see below), whose sum is σ = 11411736. Its totient is φ = 3260492.

The previous prime is 6520981. The next prime is 6520999. The reversal of 6520988 is 8890256.

It is a super-2 number, since 2×6520988² = 85046568992288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6520981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 815120 + ... + 815127.

It is an arithmetic number, because the mean of its divisors is an integer number (1901956).

Almost surely, 2^6520988 is an apocalyptic number.

It is an amenable number.

6520988 is a deficient number, since it is larger than the sum of its proper divisors (4890748).

6520988 is a wasteful number, since it uses less digits than its factorization.

6520988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1630251 (or 1630249 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 6520988 is about 2553.6225249633. The cubic root of 6520988 is about 186.8262085571.

The spelling of 6520988 in words is "six million, five hundred twenty thousand, nine hundred eighty-eight".