720459901 has 4 divisors (see below), whose sum is σ = 823382752. Its totient is φ = 617537052.

The previous prime is 720459869. The next prime is 720459907. The reversal of 720459901 is 109954027.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 109954027 = 6949 ⋅15823.

It is a cyclic number.

It is not a de Polignac number, because 720459901 - 2⁵ = 720459869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720459907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51461415 + ... + 51461428.

It is an arithmetic number, because the mean of its divisors is an integer number (205845688).

Almost surely, 2^720459901 is an apocalyptic number.

It is an amenable number.

720459901 is a deficient number, since it is larger than the sum of its proper divisors (102922851).

720459901 is a wasteful number, since it uses less digits than its factorization.

720459901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102922850.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 720459901 is about 26841.3841111072. The cubic root of 720459901 is about 896.4717422612.

The spelling of 720459901 in words is "seven hundred twenty million, four hundred fifty-nine thousand, nine hundred one".