65897894 has 4 divisors (see below), whose sum is σ = 98846844. Its totient is φ = 32948946.

The previous prime is 65897893. The next prime is 65897911. The reversal of 65897894 is 49879856.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65897893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16474472 + ... + 16474475.

It is an arithmetic number, because the mean of its divisors is an integer number (24711711).

Almost surely, 2^65897894 is an apocalyptic number.

65897894 is a deficient number, since it is larger than the sum of its proper divisors (32948950).

65897894 is a wasteful number, since it uses less digits than its factorization.

65897894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32948949.

The product of its digits is 4354560, while the sum is 56.

The square root of 65897894 is about 8117.7517823594. The cubic root of 65897894 is about 403.9154930587.

The spelling of 65897894 in words is "sixty-five million, eight hundred ninety-seven thousand, eight hundred ninety-four".