65373638 has 24 divisors (see below), whose sum is σ = 108559920. Its totient is φ = 29502000.

The previous prime is 65373629. The next prime is 65373641. The reversal of 65373638 is 83637356.

It is a junction number, because it is equal to n+sod(n) for n = 65373595 and 65373604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35648 + ... + 37436.

It is an arithmetic number, because the mean of its divisors is an integer number (4523330).

Almost surely, 2^65373638 is an apocalyptic number.

65373638 is a deficient number, since it is larger than the sum of its proper divisors (43186282).

65373638 is a wasteful number, since it uses less digits than its factorization.

65373638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1964 (or 1953 counting only the distinct ones).

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

The square root of 65373638 is about 8085.3965889126. The cubic root of 65373638 is about 402.8415125516.

The spelling of 65373638 in words is "sixty-five million, three hundred seventy-three thousand, six hundred thirty-eight".