720267601 has 4 divisors (see below), whose sum is σ = 720473652. Its totient is φ = 720061552.

The previous prime is 720267593. The next prime is 720267607. The reversal of 720267601 is 106762027.

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 259049025 + 461218576 = 16095^2 + 21476^2 .

It is a cyclic number.

It is not a de Polignac number, because 720267601 - 2³ = 720267593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (720267607) 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, 97690 + ... + 104803.

It is an arithmetic number, because the mean of its divisors is an integer number (180118413).

Almost surely, 2^720267601 is an apocalyptic number.

It is an amenable number.

720267601 is a deficient number, since it is larger than the sum of its proper divisors (206051).

720267601 is a wasteful number, since it uses less digits than its factorization.

720267601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206050.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 720267601 is about 26837.8017169812. The cubic root of 720267601 is about 896.3919752235.

The spelling of 720267601 in words is "seven hundred twenty million, two hundred sixty-seven thousand, six hundred one".