65678142 has 16 divisors (see below), whose sum is σ = 131568912. Its totient is φ = 21857280.

The previous prime is 65678141. The next prime is 65678147. The reversal of 65678142 is 24187656.

It is a self number, because there is not a number n which added to its sum of digits gives 65678142.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65678141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4693 + ... + 12384.

It is an arithmetic number, because the mean of its divisors is an integer number (8223057).

Almost surely, 2^65678142 is an apocalyptic number.

65678142 is an abundant number, since it is smaller than the sum of its proper divisors (65890770).

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

65678142 is a wasteful number, since it uses less digits than its factorization.

65678142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17723.

The product of its digits is 80640, while the sum is 39.

The square root of 65678142 is about 8104.2052047070. The cubic root of 65678142 is about 403.4660093686.

The spelling of 65678142 in words is "sixty-five million, six hundred seventy-eight thousand, one hundred forty-two".