65523963 has 16 divisors (see below), whose sum is σ = 90604800. Its totient is φ = 42070560.

The previous prime is 65523947. The next prime is 65523971. The reversal of 65523963 is 36932556.

It is not a de Polignac number, because 65523963 - 2⁴ = 65523947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65523463) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49018 + ... + 50336.

It is an arithmetic number, because the mean of its divisors is an integer number (5662800).

Almost surely, 2^65523963 is an apocalyptic number.

65523963 is a deficient number, since it is larger than the sum of its proper divisors (25080837).

65523963 is a wasteful number, since it uses less digits than its factorization.

65523963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1922.

The product of its digits is 145800, while the sum is 39.

The square root of 65523963 is about 8094.6873318245. The cubic root of 65523963 is about 403.1500507478.

The spelling of 65523963 in words is "sixty-five million, five hundred twenty-three thousand, nine hundred sixty-three".