6772720 has 20 divisors (see below), whose sum is σ = 15746760. Its totient is φ = 2709056.

The previous prime is 6772697. The next prime is 6772723. The reversal of 6772720 is 272776.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6772723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42250 + ... + 42409.

It is an arithmetic number, because the mean of its divisors is an integer number (787338).

Almost surely, 2^6772720 is an apocalyptic number.

It is an amenable number.

6772720 is an abundant number, since it is smaller than the sum of its proper divisors (8974040).

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

6772720 is a wasteful number, since it uses less digits than its factorization.

6772720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84672 (or 84666 counting only the distinct ones).

The product of its (nonzero) digits is 8232, while the sum is 31.

The square root of 6772720 is about 2602.4450042220. The cubic root of 6772720 is about 189.1999600707.

The spelling of 6772720 in words is "six million, seven hundred seventy-two thousand, seven hundred twenty".