68471936 has 32 divisors (see below), whose sum is σ = 146905500. Its totient is φ = 31601664.

The previous prime is 68471891. The next prime is 68471957. The reversal of 68471936 is 63917486.

It can be written as a sum of positive squares in 2 ways, for example, as 56911936 + 11560000 = 7544^2 + 3400^2 .

It is a tau number, because it is divible by the number of its divisors (32).

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, 18911 + ... + 22238.

Almost surely, 2^68471936 is an apocalyptic number.

It is an amenable number.

68471936 is an abundant number, since it is smaller than the sum of its proper divisors (78433564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68471936 is a wasteful number, since it uses less digits than its factorization.

68471936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41176 (or 41164 counting only the distinct ones).

The product of its digits is 217728, while the sum is 44.

The square root of 68471936 is about 8274.7770966957. Note that the first 3 decimals coincide. The cubic root of 68471936 is about 409.1075890184.

The spelling of 68471936 in words is "sixty-eight million, four hundred seventy-one thousand, nine hundred thirty-six".