720448279 has 4 divisors (see below), whose sum is σ = 720554184. Its totient is φ = 720342376.

The previous prime is 720448249. The next prime is 720448283. The reversal of 720448279 is 972844027.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 972844027 = 683 ⋅1424369.

It is a cyclic number.

It is not a de Polignac number, because 720448279 - 2¹³ = 720440087 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 (720448249) 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, 41992 + ... + 56605.

It is an arithmetic number, because the mean of its divisors is an integer number (180138546).

Almost surely, 2^720448279 is an apocalyptic number.

720448279 is a deficient number, since it is larger than the sum of its proper divisors (105905).

720448279 is an equidigital number, since it uses as much as digits as its factorization.

720448279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105904.

The product of its (nonzero) digits is 225792, while the sum is 43.

The square root of 720448279 is about 26841.1676161824. The cubic root of 720448279 is about 896.4669217983.

The spelling of 720448279 in words is "seven hundred twenty million, four hundred forty-eight thousand, two hundred seventy-nine".