6520673 has 8 divisors (see below), whose sum is σ = 6926760. Its totient is φ = 6117120.

The previous prime is 6520609. The next prime is 6520691. The reversal of 6520673 is 3760256.

It can be written as a sum of positive squares in 4 ways, for example, as 508369 + 6012304 = 713^2 + 2452^2 .

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 6520673 - 2⁶ = 6520609 is a prime.

It is a d-powerful number, because it can be written as 6⁵ + 5 + 2¹⁹ + 0 + 6⁶ + 7⁸ + 3¹¹ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6520693) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8843 + ... + 9551.

It is an arithmetic number, because the mean of its divisors is an integer number (865845).

Almost surely, 2^6520673 is an apocalyptic number.

It is an amenable number.

6520673 is a deficient number, since it is larger than the sum of its proper divisors (406087).

6520673 is a wasteful number, since it uses less digits than its factorization.

6520673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1267.

The product of its (nonzero) digits is 7560, while the sum is 29.

The square root of 6520673 is about 2553.5608471309. The cubic root of 6520673 is about 186.8232002603.

The spelling of 6520673 in words is "six million, five hundred twenty thousand, six hundred seventy-three".