66142616 has 16 divisors (see below), whose sum is σ = 124995840. Its totient is φ = 32810400.

The previous prime is 66142613. The next prime is 66142619. The reversal of 66142616 is 61624166.

It is an interprime number because it is at equal distance from previous prime (66142613) and next prime (66142619).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66142613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31535 + ... + 33566.

It is an arithmetic number, because the mean of its divisors is an integer number (7812240).

Almost surely, 2^66142616 is an apocalyptic number.

It is an amenable number.

66142616 is a deficient number, since it is larger than the sum of its proper divisors (58853224).

66142616 is a wasteful number, since it uses less digits than its factorization.

66142616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65234 (or 65230 counting only the distinct ones).

The product of its digits is 10368, while the sum is 32.

The square root of 66142616 is about 8132.8110761286. The cubic root of 66142616 is about 404.4148762302.

The spelling of 66142616 in words is "sixty-six million, one hundred forty-two thousand, six hundred sixteen".