654755623 has 4 divisors (see below), whose sum is σ = 656847808. Its totient is φ = 652663440.

The previous prime is 654755611. The next prime is 654755641. The reversal of 654755623 is 326557456.

654755623 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-654755623 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 654755623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654755683) 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, 1045623 + ... + 1046248.

It is an arithmetic number, because the mean of its divisors is an integer number (164211952).

Almost surely, 2^654755623 is an apocalyptic number.

654755623 is a deficient number, since it is larger than the sum of its proper divisors (2092185).

654755623 is a wasteful number, since it uses less digits than its factorization.

654755623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2092184.

The product of its digits is 756000, while the sum is 43.

The square root of 654755623 is about 25588.1930389780. The cubic root of 654755623 is about 868.3465415849.

The spelling of 654755623 in words is "six hundred fifty-four million, seven hundred fifty-five thousand, six hundred twenty-three".