66375430 has 32 divisors (see below), whose sum is σ = 130802688. Its totient is φ = 24050400.

The previous prime is 66375427. The next prime is 66375431. The reversal of 66375430 is 3457366.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66375431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35499 + ... + 37321.

It is an arithmetic number, because the mean of its divisors is an integer number (4087584).

Almost surely, 2^66375430 is an apocalyptic number.

66375430 is a deficient number, since it is larger than the sum of its proper divisors (64427258).

66375430 is a wasteful number, since it uses less digits than its factorization.

66375430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2172.

The product of its (nonzero) digits is 45360, while the sum is 34.

The square root of 66375430 is about 8147.1117581631. Note that the first 3 decimals coincide. The cubic root of 66375430 is about 404.8888177253. Note that the first 4 decimals are identical.

The spelling of 66375430 in words is "sixty-six million, three hundred seventy-five thousand, four hundred thirty".