65947814 has 4 divisors (see below), whose sum is σ = 98921724. Its totient is φ = 32973906.

The previous prime is 65947793. The next prime is 65947837. The reversal of 65947814 is 41874956.

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

It is a super-2 number, since 2×65947814² = 8698228342757192, which contains 22 as substring.

It is a Curzon number.

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, 16486952 + ... + 16486955.

It is an arithmetic number, because the mean of its divisors is an integer number (24730431).

Almost surely, 2^65947814 is an apocalyptic number.

65947814 is a deficient number, since it is larger than the sum of its proper divisors (32973910).

65947814 is a wasteful number, since it uses less digits than its factorization.

65947814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32973909.

The product of its digits is 241920, while the sum is 44.

The square root of 65947814 is about 8120.8259432154. The cubic root of 65947814 is about 404.0174607687.

The spelling of 65947814 in words is "sixty-five million, nine hundred forty-seven thousand, eight hundred fourteen".