6720189536 has 24 divisors (see below), whose sum is σ = 13235113584. Its totient is φ = 3358890880.

The previous prime is 6720189527. The next prime is 6720189557. The reversal of 6720189536 is 6359810276.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56726 + ... + 129066.

It is an arithmetic number, because the mean of its divisors is an integer number (551463066).

Almost surely, 2^6720189536 is an apocalyptic number.

It is an amenable number.

6720189536 is a deficient number, since it is larger than the sum of its proper divisors (6514924048).

6720189536 is a wasteful number, since it uses less digits than its factorization.

6720189536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75254 (or 75246 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 47.

The square root of 6720189536 is about 81976.7621707518. The cubic root of 6720189536 is about 1887.0953334845.

The spelling of 6720189536 in words is "six billion, seven hundred twenty million, one hundred eighty-nine thousand, five hundred thirty-six".