6720251973 has 16 divisors (see below), whose sum is σ = 8996550336. Its totient is φ = 4462092800.

The previous prime is 6720251969. The next prime is 6720251977. The reversal of 6720251973 is 3791520276.

It is an interprime number because it is at equal distance from previous prime (6720251969) and next prime (6720251977).

It is a cyclic number.

It is not a de Polignac number, because 6720251973 - 2² = 6720251969 is a prime.

It is a super-2 number, since 2×6720251973² = 90323573161220785458, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6720251977) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 999523 + ... + 1006223.

It is an arithmetic number, because the mean of its divisors is an integer number (562284396).

Almost surely, 2^6720251973 is an apocalyptic number.

It is an amenable number.

6720251973 is a deficient number, since it is larger than the sum of its proper divisors (2276298363).

6720251973 is a wasteful number, since it uses less digits than its factorization.

6720251973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8004.

The product of its (nonzero) digits is 158760, while the sum is 42.

The square root of 6720251973 is about 81977.1429912021. The cubic root of 6720251973 is about 1887.1011777744.

The spelling of 6720251973 in words is "six billion, seven hundred twenty million, two hundred fifty-one thousand, nine hundred seventy-three".