123647473 has 8 divisors (see below), whose sum is σ = 125570600. Its totient is φ = 121730688.

The previous prime is 123647467. The next prime is 123647519. The reversal of 123647473 is 374746321.

It can be written as a sum of positive squares in 4 ways, for example, as 725904 + 122921569 = 852^2 + 11087^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123647473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123647453) 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, 50563 + ... + 52951.

It is an arithmetic number, because the mean of its divisors is an integer number (15696325).

Almost surely, 2^123647473 is an apocalyptic number.

It is an amenable number.

123647473 is a deficient number, since it is larger than the sum of its proper divisors (1923127).

123647473 is an equidigital number, since it uses as much as digits as its factorization.

123647473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3171.

The product of its digits is 84672, while the sum is 37.

The square root of 123647473 is about 11119.6885298105. The cubic root of 123647473 is about 498.1900870017.

The spelling of 123647473 in words is "one hundred twenty-three million, six hundred forty-seven thousand, four hundred seventy-three".