6520772 has 6 divisors (see below), whose sum is σ = 11411358. Its totient is φ = 3260384.

The previous prime is 6520771. The next prime is 6520777. The reversal of 6520772 is 2770256.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 4605316 + 1915456 = 2146^2 + 1384^2 .

It is not an unprimeable number, because it can be changed into a prime (6520771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 815093 + ... + 815100.

It is an arithmetic number, because the mean of its divisors is an integer number (1901893).

Almost surely, 2^6520772 is an apocalyptic number.

It is an amenable number.

6520772 is a deficient number, since it is larger than the sum of its proper divisors (4890586).

6520772 is a wasteful number, since it uses less digits than its factorization.

6520772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1630197 (or 1630195 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 6520772 is about 2553.5802317531. The cubic root of 6520772 is about 186.8241457355.

The spelling of 6520772 in words is "six million, five hundred twenty thousand, seven hundred seventy-two".