720682105 has 64 divisors (see below), whose sum is σ = 1084720896. Its totient is φ = 451584000.

The previous prime is 720682099. The next prime is 720682147. The reversal of 720682105 is 501286027.

It is not a de Polignac number, because 720682105 - 2⁵ = 720682073 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2564565 + ... + 2564845.

It is an arithmetic number, because the mean of its divisors is an integer number (16948764).

Almost surely, 2^720682105 is an apocalyptic number.

It is an amenable number.

720682105 is a deficient number, since it is larger than the sum of its proper divisors (364038791).

720682105 is a wasteful number, since it uses less digits than its factorization.

720682105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 720682105 is about 26845.5229973268. The cubic root of 720682105 is about 896.5638959588.

The spelling of 720682105 in words is "seven hundred twenty million, six hundred eighty-two thousand, one hundred five".