65123603 has 12 divisors (see below), whose sum is σ = 68470248. Its totient is φ = 61934400.

The previous prime is 65123599. The next prime is 65123609. The reversal of 65123603 is 30632156.

It is not a de Polignac number, because 65123603 - 2² = 65123599 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65123609) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 162203 + ... + 162603.

It is an arithmetic number, because the mean of its divisors is an integer number (5705854).

Almost surely, 2^65123603 is an apocalyptic number.

65123603 is a deficient number, since it is larger than the sum of its proper divisors (3346645).

65123603 is a wasteful number, since it uses less digits than its factorization.

65123603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 754 (or 731 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 65123603 is about 8069.9196402443. The cubic root of 65123603 is about 402.3272728260.

Adding to 65123603 its reverse (30632156), we get a palindrome (95755759).

The spelling of 65123603 in words is "sixty-five million, one hundred twenty-three thousand, six hundred three".