65143814 has 4 divisors (see below), whose sum is σ = 97715724. Its totient is φ = 32571906.

The previous prime is 65143807. The next prime is 65143867. The reversal of 65143814 is 41834156.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16285952 + ... + 16285955.

It is an arithmetic number, because the mean of its divisors is an integer number (24428931).

Almost surely, 2^65143814 is an apocalyptic number.

65143814 is a deficient number, since it is larger than the sum of its proper divisors (32571910).

65143814 is a wasteful number, since it uses less digits than its factorization.

65143814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32571909.

The product of its digits is 11520, while the sum is 32.

The square root of 65143814 is about 8071.1717860544. The cubic root of 65143814 is about 402.3688890505.

The spelling of 65143814 in words is "sixty-five million, one hundred forty-three thousand, eight hundred fourteen".