65436023 has 4 divisors (see below), whose sum is σ = 65585520. Its totient is φ = 65286528.

The previous prime is 65436013. The next prime is 65436031. The reversal of 65436023 is 32063456.

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

It is a cyclic number.

It is not a de Polignac number, because 65436023 - 2⁸ = 65435767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65436013) 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, 74090 + ... + 74967.

It is an arithmetic number, because the mean of its divisors is an integer number (16396380).

Almost surely, 2^65436023 is an apocalyptic number.

65436023 is a deficient number, since it is larger than the sum of its proper divisors (149497).

65436023 is a wasteful number, since it uses less digits than its factorization.

65436023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149496.

The product of its (nonzero) digits is 12960, while the sum is 29.

The square root of 65436023 is about 8089.2535502356. The cubic root of 65436023 is about 402.9696135143.

Adding to 65436023 its reverse (32063456), we get a palindrome (97499479).

The spelling of 65436023 in words is "sixty-five million, four hundred thirty-six thousand, twenty-three".