66238936 has 16 divisors (see below), whose sum is σ = 131504040. Its totient is φ = 31171200.

The previous prime is 66238927. The next prime is 66238943. The reversal of 66238936 is 63983266.

It is a junction number, because it is equal to n+sod(n) for n = 66238892 and 66238901.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 243390 + ... + 243661.

Almost surely, 2^66238936 is an apocalyptic number.

It is an amenable number.

66238936 is a deficient number, since it is larger than the sum of its proper divisors (65265104).

66238936 is a wasteful number, since it uses less digits than its factorization.

66238936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487074 (or 487070 counting only the distinct ones).

The product of its digits is 279936, while the sum is 43.

The square root of 66238936 is about 8138.7306135539. The cubic root of 66238936 is about 404.6110903606.

The spelling of 66238936 in words is "sixty-six million, two hundred thirty-eight thousand, nine hundred thirty-six".