64416523 has 4 divisors (see below), whose sum is σ = 64454320. Its totient is φ = 64378728.

The previous prime is 64416503. The next prime is 64416533. The reversal of 64416523 is 32561446.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32561446 = 2 ⋅16280723.

It is a cyclic number.

It is not a de Polignac number, because 64416523 - 2²¹ = 62319371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64416503) 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, 16215 + ... + 19792.

It is an arithmetic number, because the mean of its divisors is an integer number (16113580).

Almost surely, 2^64416523 is an apocalyptic number.

64416523 is a deficient number, since it is larger than the sum of its proper divisors (37797).

64416523 is a wasteful number, since it uses less digits than its factorization.

64416523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37796.

The product of its digits is 17280, while the sum is 31.

The square root of 64416523 is about 8025.9904684718. The cubic root of 64416523 is about 400.8658805248.

Adding to 64416523 its reverse (32561446), we get a palindrome (96977969).

The spelling of 64416523 in words is "sixty-four million, four hundred sixteen thousand, five hundred twenty-three".