66965142 has 32 divisors (see below), whose sum is σ = 142331904. Its totient is φ = 20931200.

The previous prime is 66965137. The next prime is 66965179. The reversal of 66965142 is 24156966.

It is a self number, because there is not a number n which added to its sum of digits gives 66965142.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30667 + ... + 32777.

It is an arithmetic number, because the mean of its divisors is an integer number (4447872).

Almost surely, 2^66965142 is an apocalyptic number.

66965142 is an abundant number, since it is smaller than the sum of its proper divisors (75366762).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66965142 is a wasteful number, since it uses less digits than its factorization.

66965142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2444.

The product of its digits is 77760, while the sum is 39.

The square root of 66965142 is about 8183.2232036038. The cubic root of 66965142 is about 406.0843612866.

The spelling of 66965142 in words is "sixty-six million, nine hundred sixty-five thousand, one hundred forty-two".