720954649801 has 4 divisors (see below), whose sum is σ = 720957658900. Its totient is φ = 720951640704.

The previous prime is 720954649769. The next prime is 720954649837. The reversal of 720954649801 is 108946459027.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 483999881401 + 236954768400 = 695701^2 + 486780^2 .

It is a cyclic number.

It is not a de Polignac number, because 720954649801 - 2⁵ = 720954649769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (720954649871) 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, 1110816 + ... + 1635793.

It is an arithmetic number, because the mean of its divisors is an integer number (180239414725).

Almost surely, 2^720954649801 is an apocalyptic number.

It is an amenable number.

720954649801 is a deficient number, since it is larger than the sum of its proper divisors (3009099).

720954649801 is a wasteful number, since it uses less digits than its factorization.

720954649801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3009098.

The product of its (nonzero) digits is 4354560, while the sum is 55.

The spelling of 720954649801 in words is "seven hundred twenty billion, nine hundred fifty-four million, six hundred forty-nine thousand, eight hundred one".