720042623 has 8 divisors (see below), whose sum is σ = 753404928. Its totient is φ = 686851704.

The previous prime is 720042619. The next prime is 720042641. The reversal of 720042623 is 326240027.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 720042623 - 2² = 720042619 is a prime.

It is a super-2 number, since 2×720042623² = 1036922757873440258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 720042592 and 720042601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720042613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34211 + ... + 51092.

It is an arithmetic number, because the mean of its divisors is an integer number (94175616).

Almost surely, 2^720042623 is an apocalyptic number.

720042623 is a deficient number, since it is larger than the sum of its proper divisors (33362305).

720042623 is a wasteful number, since it uses less digits than its factorization.

720042623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85693.

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 720042623 is about 26833.6099509552. The cubic root of 720042623 is about 896.2986351582.

The spelling of 720042623 in words is "seven hundred twenty million, forty-two thousand, six hundred twenty-three".