720982519 has 4 divisors (see below), whose sum is σ = 730108960. Its totient is φ = 711856080.

The previous prime is 720982513. The next prime is 720982523. The reversal of 720982519 is 915289027.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 915289027 = 17 ⋅53840531.

It is a cyclic number.

It is not a de Polignac number, because 720982519 - 2¹³ = 720974327 is a prime.

It is a super-2 number, since 2×720982519² = 1039631585407170722, 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 (720982513) 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, 4563102 + ... + 4563259.

It is an arithmetic number, because the mean of its divisors is an integer number (182527240).

Almost surely, 2^720982519 is an apocalyptic number.

720982519 is a gapful number since it is divisible by the number (79) formed by its first and last digit.

720982519 is the 15503-rd hex number.

720982519 is a deficient number, since it is larger than the sum of its proper divisors (9126441).

720982519 is an equidigital number, since it uses as much as digits as its factorization.

720982519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9126440.

The product of its (nonzero) digits is 90720, while the sum is 43.

The square root of 720982519 is about 26851.1176489918. The cubic root of 720982519 is about 896.6884552378.

The spelling of 720982519 in words is "seven hundred twenty million, nine hundred eighty-two thousand, five hundred nineteen".