66714278 has 8 divisors (see below), whose sum is σ = 100329840. Its totient is φ = 33271000.

The previous prime is 66714269. The next prime is 66714281. The reversal of 66714278 is 87241766.

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

It is a super-2 number, since 2×66714278² = 8901589778122568, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42098 + ... + 43653.

It is an arithmetic number, because the mean of its divisors is an integer number (12541230).

Almost surely, 2^66714278 is an apocalyptic number.

66714278 is a deficient number, since it is larger than the sum of its proper divisors (33615562).

66714278 is a wasteful number, since it uses less digits than its factorization.

66714278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86142.

The product of its digits is 112896, while the sum is 41.

The square root of 66714278 is about 8167.8808757229. The cubic root of 66714278 is about 405.5766373173.

The spelling of 66714278 in words is "sixty-six million, seven hundred fourteen thousand, two hundred seventy-eight".