65840494 has 4 divisors (see below), whose sum is σ = 98760744. Its totient is φ = 32920246.

The previous prime is 65840459. The next prime is 65840503. The reversal of 65840494 is 49404856.

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, 16460122 + ... + 16460125.

It is an arithmetic number, because the mean of its divisors is an integer number (24690186).

Almost surely, 2^65840494 is an apocalyptic number.

65840494 is a deficient number, since it is larger than the sum of its proper divisors (32920250).

65840494 is a wasteful number, since it uses less digits than its factorization.

65840494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32920249.

The product of its (nonzero) digits is 138240, while the sum is 40.

The square root of 65840494 is about 8114.2155505015. The cubic root of 65840494 is about 403.7981828646.

The spelling of 65840494 in words is "sixty-five million, eight hundred forty thousand, four hundred ninety-four".