66214642 has 16 divisors (see below), whose sum is σ = 107352000. Its totient is φ = 30449232.

The previous prime is 66214637. The next prime is 66214651. The reversal of 66214642 is 24641266.

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, 2859 + ... + 11857.

It is an arithmetic number, because the mean of its divisors is an integer number (6709500).

Almost surely, 2^66214642 is an apocalyptic number.

66214642 is a deficient number, since it is larger than the sum of its proper divisors (41137358).

66214642 is a wasteful number, since it uses less digits than its factorization.

66214642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9297.

The product of its digits is 13824, while the sum is 31.

The square root of 66214642 is about 8137.2379834929. The cubic root of 66214642 is about 404.5616188344.

The spelling of 66214642 in words is "sixty-six million, two hundred fourteen thousand, six hundred forty-two".