66404350 has 12 divisors (see below), whose sum is σ = 123512184. Its totient is φ = 26561720.

The previous prime is 66404347. The next prime is 66404353. The reversal of 66404350 is 5340466.

It is an interprime number because it is at equal distance from previous prime (66404347) and next prime (66404353).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66404353) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 663994 + ... + 664093.

It is an arithmetic number, because the mean of its divisors is an integer number (10292682).

Almost surely, 2^66404350 is an apocalyptic number.

66404350 is a deficient number, since it is larger than the sum of its proper divisors (57107834).

66404350 is a wasteful number, since it uses less digits than its factorization.

66404350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1328099 (or 1328094 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 66404350 is about 8148.8864269911. The cubic root of 66404350 is about 404.9476129974.

The spelling of 66404350 in words is "sixty-six million, four hundred four thousand, three hundred fifty".