720675423 has 12 divisors (see below), whose sum is σ = 1121050840. Its totient is φ = 443492496.

The previous prime is 720675421. The next prime is 720675427. The reversal of 720675423 is 324576027.

It is a happy number.

It is not a de Polignac number, because 720675423 - 2¹ = 720675421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720675421) 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 11 ways as a sum of consecutive naturals, for example, 3079693 + ... + 3079926.

Almost surely, 2^720675423 is an apocalyptic number.

720675423 is a deficient number, since it is larger than the sum of its proper divisors (400375417).

720675423 is a wasteful number, since it uses less digits than its factorization.

720675423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6159638 (or 6159635 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 36.

The square root of 720675423 is about 26845.3985442571. The cubic root of 720675423 is about 896.5611250383.

The spelling of 720675423 in words is "seven hundred twenty million, six hundred seventy-five thousand, four hundred twenty-three".