66461696 has 112 divisors (see below), whose sum is σ = 162519360. Its totient is φ = 26542080.

The previous prime is 66461683. The next prime is 66461719. The reversal of 66461696 is 69616466.

It is a tau number, because it is divible by the number of its divisors (112).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1089506 + ... + 1089566.

Almost surely, 2^66461696 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66461696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81259680).

66461696 is an abundant number, since it is smaller than the sum of its proper divisors (96057664).

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

66461696 is an equidigital number, since it uses as much as digits as its factorization.

66461696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113 (or 89 counting only the distinct ones).

The product of its digits is 279936, while the sum is 44.

The square root of 66461696 is about 8152.4043079327. The cubic root of 66461696 is about 405.0641487577.

The spelling of 66461696 in words is "sixty-six million, four hundred sixty-one thousand, six hundred ninety-six".