66523436 has 12 divisors (see below), whose sum is σ = 133046928. Its totient is φ = 28510032.

The previous prime is 66523423. The next prime is 66523453. The reversal of 66523436 is 63432566.

66523436 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 66523396 and 66523405.

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, 1187891 + ... + 1187946.

It is an arithmetic number, because the mean of its divisors is an integer number (11087244).

Almost surely, 2^66523436 is an apocalyptic number.

It is an amenable number.

66523436 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

66523436 is a wasteful number, since it uses less digits than its factorization.

66523436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2375848 (or 2375846 counting only the distinct ones).

The product of its digits is 77760, while the sum is 35.

The square root of 66523436 is about 8156.1900419252. The cubic root of 66523436 is about 405.1895388799.

The spelling of 66523436 in words is "sixty-six million, five hundred twenty-three thousand, four hundred thirty-six".