6406720052 has 24 divisors (see below), whose sum is σ = 11518715040. Its totient is φ = 3115717920.

The previous prime is 6406720051. The next prime is 6406720087. The reversal of 6406720052 is 2500276046.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6406720051) 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, 589427 + ... + 600197.

It is an arithmetic number, because the mean of its divisors is an integer number (479946460).

Almost surely, 2^6406720052 is an apocalyptic number.

It is an amenable number.

6406720052 is a deficient number, since it is larger than the sum of its proper divisors (5111994988).

6406720052 is a wasteful number, since it uses less digits than its factorization.

6406720052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14831 (or 14829 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 6406720052 is about 80041.9893056138. The cubic root of 6406720052 is about 1857.2851336014.

Adding to 6406720052 its reverse (2500276046), we get a palindrome (8906996098).

The spelling of 6406720052 in words is "six billion, four hundred six million, seven hundred twenty thousand, fifty-two".