6720363331 has 4 divisors (see below), whose sum is σ = 7331305464. Its totient is φ = 6109421200.

The previous prime is 6720363319. The next prime is 6720363359. The reversal of 6720363331 is 1333630276.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6720363331 - 2²³ = 6711974723 is a prime.

It is a super-2 number, since 2×6720363331² = 90326566601298831122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6720363311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 305471050 + ... + 305471071.

It is an arithmetic number, because the mean of its divisors is an integer number (1832826366).

Almost surely, 2^6720363331 is an apocalyptic number.

6720363331 is a deficient number, since it is larger than the sum of its proper divisors (610942133).

6720363331 is a wasteful number, since it uses less digits than its factorization.

6720363331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610942132.

The product of its (nonzero) digits is 40824, while the sum is 34.

The square root of 6720363331 is about 81977.8221899069. The cubic root of 6720363331 is about 1887.1116011262. Note that the first 3 decimals are identical.

The spelling of 6720363331 in words is "six billion, seven hundred twenty million, three hundred sixty-three thousand, three hundred thirty-one".