66773344 has 24 divisors (see below), whose sum is σ = 143411688. Its totient is φ = 30351360.

The previous prime is 66773327. The next prime is 66773351. The reversal of 66773344 is 44337766.

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 66773297 and 66773306.

It is a congruent number.

It is an unprimeable number.

It is an upside-down number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94497 + ... + 95200.

It is an arithmetic number, because the mean of its divisors is an integer number (5975487).

Almost surely, 2^66773344 is an apocalyptic number.

It is an amenable number.

66773344 is an abundant number, since it is smaller than the sum of its proper divisors (76638344).

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

66773344 is a wasteful number, since it uses less digits than its factorization.

66773344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189718 (or 189710 counting only the distinct ones).

The product of its digits is 254016, while the sum is 40.

The square root of 66773344 is about 8171.4958238991. The cubic root of 66773344 is about 405.6962954776.

The spelling of 66773344 in words is "sixty-six million, seven hundred seventy-three thousand, three hundred forty-four".