66793748 has 48 divisors (see below), whose sum is σ = 147619584. Its totient is φ = 25766400.

The previous prime is 66793739. The next prime is 66793777. The reversal of 66793748 is 84739766.

It is a super-2 number, since 2×66793748² = 8922809543775008, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 66793696 and 66793705.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7898 + ... + 13998.

It is an arithmetic number, because the mean of its divisors is an integer number (3075408).

Almost surely, 2^66793748 is an apocalyptic number.

66793748 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66793748, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73809792).

66793748 is an abundant number, since it is smaller than the sum of its proper divisors (80825836).

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

66793748 is a wasteful number, since it uses less digits than its factorization.

66793748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6152 (or 6150 counting only the distinct ones).

The product of its digits is 1524096, while the sum is 50.

The square root of 66793748 is about 8172.7442147665. The cubic root of 66793748 is about 405.7376142819.

The spelling of 66793748 in words is "sixty-six million, seven hundred ninety-three thousand, seven hundred forty-eight".