720841956306 has 64 divisors (see below), whose sum is σ = 1597372109568. Its totient is φ = 215701004288.

The previous prime is 720841956299. The next prime is 720841956353. The reversal of 720841956306 is 603659148027.

It is a super-2 number, since 2×720841956306² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 392920 + ... + 1263356.

It is an arithmetic number, because the mean of its divisors is an integer number (24958939212).

It is a 1-persistent number, because it is pandigital, but 2⋅720841956306 = 1441683912612 is not.

Almost surely, 2^720841956306 is an apocalyptic number.

720841956306 is an abundant number, since it is smaller than the sum of its proper divisors (876530153262).

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

720841956306 is a wasteful number, since it uses less digits than its factorization.

720841956306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 870835.

The product of its (nonzero) digits is 2177280, while the sum is 51.

The spelling of 720841956306 in words is "seven hundred twenty billion, eight hundred forty-one million, nine hundred fifty-six thousand, three hundred six".