66667414 has 16 divisors (see below), whose sum is σ = 112041936. Its totient is φ = 29484000.

The previous prime is 66667399. The next prime is 66667423. The reversal of 66667414 is 41476666.

It is a happy number.

It is a zygodrome in base 3.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40137 + ... + 41764.

It is an arithmetic number, because the mean of its divisors is an integer number (7002621).

Almost surely, 2^66667414 is an apocalyptic number.

66667414 is a deficient number, since it is larger than the sum of its proper divisors (45374522).

66667414 is a wasteful number, since it uses less digits than its factorization.

66667414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81951.

The product of its digits is 145152, while the sum is 40.

The square root of 66667414 is about 8165.0115737824. The cubic root of 66667414 is about 405.4816481767.

It can be divided in two parts, 66667 and 414, that added together give a square (67081 = 259²).

The spelling of 66667414 in words is "sixty-six million, six hundred sixty-seven thousand, four hundred fourteen".