723621603 has 16 divisors (see below), whose sum is σ = 974798496. Its totient is φ = 477442560.

The previous prime is 723621557. The next prime is 723621611. The reversal of 723621603 is 306126327.

723621603 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 723621603 - 2⁸ = 723621347 is a prime.

It is not an unprimeable number, because it can be changed into a prime (723621683) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 336913 + ... + 339053.

It is an arithmetic number, because the mean of its divisors is an integer number (60924906).

Almost surely, 2^723621603 is an apocalyptic number.

723621603 is a deficient number, since it is larger than the sum of its proper divisors (251176893).

723621603 is a wasteful number, since it uses less digits than its factorization.

723621603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3254.

The product of its (nonzero) digits is 9072, while the sum is 30.

The square root of 723621603 is about 26900.2156682804. The cubic root of 723621603 is about 897.7812023263.

The spelling of 723621603 in words is "seven hundred twenty-three million, six hundred twenty-one thousand, six hundred three".