66536456 has 16 divisors (see below), whose sum is σ = 142578240. Its totient is φ = 28515600.

The previous prime is 66536383. The next prime is 66536473. The reversal of 66536456 is 65463566.

It is a happy 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, 594020 + ... + 594131.

It is an arithmetic number, because the mean of its divisors is an integer number (8911140).

Almost surely, 2^66536456 is an apocalyptic number.

It is an amenable number.

66536456 is an abundant number, since it is smaller than the sum of its proper divisors (76041784).

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

66536456 is a wasteful number, since it uses less digits than its factorization.

66536456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1188164 (or 1188160 counting only the distinct ones).

The product of its digits is 388800, while the sum is 41.

The square root of 66536456 is about 8156.9881696616. The cubic root of 66536456 is about 405.2159717882.

The spelling of 66536456 in words is "sixty-six million, five hundred thirty-six thousand, four hundred fifty-six".