65563906 has 8 divisors (see below), whose sum is σ = 100633104. Its totient is φ = 32019540.

The previous prime is 65563903. The next prime is 65563909. The reversal of 65563906 is 60936556.

It is an interprime number because it is at equal distance from previous prime (65563903) and next prime (65563909).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (65563903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 381100 + ... + 381271.

It is an arithmetic number, because the mean of its divisors is an integer number (12579138).

Almost surely, 2^65563906 is an apocalyptic number.

65563906 is a deficient number, since it is larger than the sum of its proper divisors (35069198).

65563906 is a wasteful number, since it uses less digits than its factorization.

65563906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 762416.

The product of its (nonzero) digits is 145800, while the sum is 40.

The square root of 65563906 is about 8097.1541914428. The cubic root of 65563906 is about 403.2319533615.

The spelling of 65563906 in words is "sixty-five million, five hundred sixty-three thousand, nine hundred six".