66680254 has 8 divisors (see below), whose sum is σ = 101907720. Its totient is φ = 32711016.

The previous prime is 66680233. The next prime is 66680267. The reversal of 66680254 is 45208666.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 314424 + ... + 314635.

It is an arithmetic number, because the mean of its divisors is an integer number (12738465).

Almost surely, 2^66680254 is an apocalyptic number.

66680254 is a deficient number, since it is larger than the sum of its proper divisors (35227466).

66680254 is a wasteful number, since it uses less digits than its factorization.

66680254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629114.

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 66680254 is about 8165.7978177273. The cubic root of 66680254 is about 405.5076781356.

The spelling of 66680254 in words is "sixty-six million, six hundred eighty thousand, two hundred fifty-four".