6720123870 has 96 divisors (see below), whose sum is σ = 18739188000. Its totient is φ = 1665660672.

The previous prime is 6720123869. The next prime is 6720123871. The reversal of 6720123870 is 783210276.

It is an interprime number because it is at equal distance from previous prime (6720123869) and next prime (6720123871).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6720123871) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 53556 + ... + 127704.

It is an arithmetic number, because the mean of its divisors is an integer number (195199875).

Almost surely, 2^6720123870 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6720123870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9369594000).

6720123870 is an abundant number, since it is smaller than the sum of its proper divisors (12019064130).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6720123870 is a wasteful number, since it uses less digits than its factorization.

6720123870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74234 (or 74231 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 6720123870 is about 81976.3616538329. The cubic root of 6720123870 is about 1887.0891869116.

The spelling of 6720123870 in words is "six billion, seven hundred twenty million, one hundred twenty-three thousand, eight hundred seventy".