1623725663 has 8 divisors (see below), whose sum is σ = 1864009728. Its totient is φ = 1385522424.

The previous prime is 1623725659. The next prime is 1623725669. The reversal of 1623725663 is 3665273261.

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 1623725663 - 2² = 1623725659 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1623725663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1623725669) 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, 518531 + ... + 521652.

It is an arithmetic number, because the mean of its divisors is an integer number (233001216).

Almost surely, 2^1623725663 is an apocalyptic number.

1623725663 is a deficient number, since it is larger than the sum of its proper divisors (240284065).

1623725663 is a wasteful number, since it uses less digits than its factorization.

1623725663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1040413.

The product of its digits is 272160, while the sum is 41.

The square root of 1623725663 is about 40295.4794362842. The cubic root of 1623725663 is about 1175.3599411529.

The spelling of 1623725663 in words is "one billion, six hundred twenty-three million, seven hundred twenty-five thousand, six hundred sixty-three".