68633811 has 20 divisors (see below), whose sum is σ = 108560232. Its totient is φ = 43063488.

The previous prime is 68633809. The next prime is 68633821. The reversal of 68633811 is 11833686.

68633811 is a `hidden beast` number, since 6 + 8 + 633 + 8 + 11 = 666.

It is not a de Polignac number, because 68633811 - 2¹ = 68633809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68633821) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 23545 + ... + 26298.

Almost surely, 2^68633811 is an apocalyptic number.

68633811 is a deficient number, since it is larger than the sum of its proper divisors (39926421).

68633811 is a wasteful number, since it uses less digits than its factorization.

68633811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49872 (or 49863 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 68633811 is about 8284.5525527937. The cubic root of 68633811 is about 409.4297267007.

The spelling of 68633811 in words is "sixty-eight million, six hundred thirty-three thousand, eight hundred eleven".