6461720 has 16 divisors (see below), whose sum is σ = 14538960. Its totient is φ = 2584672.

The previous prime is 6461713. The next prime is 6461737. The reversal of 6461720 is 271646.

It is a self number, because there is not a number n which added to its sum of digits gives 6461720.

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, 80732 + ... + 80811.

It is an arithmetic number, because the mean of its divisors is an integer number (908685).

Almost surely, 2^6461720 is an apocalyptic number.

It is an amenable number.

6461720 is an abundant number, since it is smaller than the sum of its proper divisors (8077240).

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

6461720 is a wasteful number, since it uses less digits than its factorization.

6461720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161554 (or 161550 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 6461720 is about 2541.9913453826. The cubic root of 6461720 is about 186.2584759592.

The spelling of 6461720 in words is "six million, four hundred sixty-one thousand, seven hundred twenty".