123796643 has 4 divisors (see below), whose sum is σ = 124278600. Its totient is φ = 123314688.

The previous prime is 123796583. The next prime is 123796697. The reversal of 123796643 is 346697321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 346697321 = 397 ⋅873293.

It is a cyclic number.

It is not a de Polignac number, because 123796643 - 2¹⁶ = 123731107 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 123796643.

It is not an unprimeable number, because it can be changed into a prime (123796843) 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, 240593 + ... + 241106.

It is an arithmetic number, because the mean of its divisors is an integer number (31069650).

Almost surely, 2^123796643 is an apocalyptic number.

123796643 is a deficient number, since it is larger than the sum of its proper divisors (481957).

123796643 is an equidigital number, since it uses as much as digits as its factorization.

123796643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481956.

The product of its digits is 163296, while the sum is 41.

The square root of 123796643 is about 11126.3939800818. The cubic root of 123796643 is about 498.3903475991.

The spelling of 123796643 in words is "one hundred twenty-three million, seven hundred ninety-six thousand, six hundred forty-three".