65650438 has 16 divisors (see below), whose sum is σ = 112654080. Its totient is φ = 28108296.

The previous prime is 65650397. The next prime is 65650439. The reversal of 65650438 is 83405656.

It is a junction number, because it is equal to n+sod(n) for n = 65650397 and 65650406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65650439) 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, 19783 + ... + 22861.

It is an arithmetic number, because the mean of its divisors is an integer number (7040880).

Almost surely, 2^65650438 is an apocalyptic number.

65650438 is a deficient number, since it is larger than the sum of its proper divisors (47003642).

65650438 is a wasteful number, since it uses less digits than its factorization.

65650438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4611.

The product of its (nonzero) digits is 86400, while the sum is 37.

The square root of 65650438 is about 8102.4957883358. The cubic root of 65650438 is about 403.4092721042.

The spelling of 65650438 in words is "sixty-five million, six hundred fifty thousand, four hundred thirty-eight".