66461936 has 10 divisors (see below), whose sum is σ = 128770032. Its totient is φ = 33230960.

The previous prime is 66461921. The next prime is 66461957. The reversal of 66461936 is 63916466.

66461936 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 66461893 and 66461902.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2076920 + ... + 2076951.

Almost surely, 2^66461936 is an apocalyptic number.

It is an amenable number.

66461936 is a deficient number, since it is larger than the sum of its proper divisors (62308096).

66461936 is a wasteful number, since it uses less digits than its factorization.

66461936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4153879 (or 4153873 counting only the distinct ones).

The product of its digits is 139968, while the sum is 41.

The square root of 66461936 is about 8152.4190275034. The cubic root of 66461936 is about 405.0646363332.

The spelling of 66461936 in words is "sixty-six million, four hundred sixty-one thousand, nine hundred thirty-six".