123765797 has 4 divisors (see below), whose sum is σ = 131046156. Its totient is φ = 116485440.

The previous prime is 123765793. The next prime is 123765799. The reversal of 123765797 is 797567321.

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

It can be written as a sum of positive squares in 2 ways, for example, as 48874081 + 74891716 = 6991^2 + 8654^2 .

It is a cyclic number.

It is not a de Polignac number, because 123765797 - 2² = 123765793 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123765793) 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, 3640154 + ... + 3640187.

It is an arithmetic number, because the mean of its divisors is an integer number (32761539).

Almost surely, 2^123765797 is an apocalyptic number.

123765797 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

123765797 is a deficient number, since it is larger than the sum of its proper divisors (7280359).

123765797 is an equidigital number, since it uses as much as digits as its factorization.

123765797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7280358.

The product of its digits is 555660, while the sum is 47.

The square root of 123765797 is about 11125.0077303344. The cubic root of 123765797 is about 498.3489500692.

The spelling of 123765797 in words is "one hundred twenty-three million, seven hundred sixty-five thousand, seven hundred ninety-seven".