720648119 has 4 divisors (see below), whose sum is σ = 720983760. Its totient is φ = 720312480.

The previous prime is 720648107. The next prime is 720648127. The reversal of 720648119 is 911846027.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 911846027 = 41 ⋅22240147.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-720648119 is a prime.

It is a super-2 number, since 2×720648119² = 1038667422836476322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720648199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164579 + ... + 168900.

It is an arithmetic number, because the mean of its divisors is an integer number (180245940).

Almost surely, 2^720648119 is an apocalyptic number.

720648119 is a deficient number, since it is larger than the sum of its proper divisors (335641).

720648119 is a wasteful number, since it uses less digits than its factorization.

720648119 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335640.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 720648119 is about 26844.8899979121. The cubic root of 720648119 is about 896.5498023201.

The spelling of 720648119 in words is "seven hundred twenty million, six hundred forty-eight thousand, one hundred nineteen".