66214450 has 24 divisors (see below), whose sum is σ = 127134720. Its totient is φ = 25630800.

The previous prime is 66214441. The next prime is 66214469. The reversal of 66214450 is 5441266.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19810 + ... + 22909.

It is an arithmetic number, because the mean of its divisors is an integer number (5297280).

Almost surely, 2^66214450 is an apocalyptic number.

66214450 is a deficient number, since it is larger than the sum of its proper divisors (60920270).

66214450 is a wasteful number, since it uses less digits than its factorization.

66214450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42762 (or 42757 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 66214450 is about 8137.2261858695. The cubic root of 66214450 is about 404.5612278035.

The spelling of 66214450 in words is "sixty-six million, two hundred fourteen thousand, four hundred fifty".