64434523 has 8 divisors (see below), whose sum is σ = 69405696. Its totient is φ = 59644200.

The previous prime is 64434499. The next prime is 64434541. The reversal of 64434523 is 32543446.

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

It is a cyclic number.

It is not a de Polignac number, because 64434523 - 2²¹ = 62337371 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64434553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44473 + ... + 45898.

It is an arithmetic number, because the mean of its divisors is an integer number (8675712).

Almost surely, 2^64434523 is an apocalyptic number.

64434523 is a deficient number, since it is larger than the sum of its proper divisors (4971173).

64434523 is a wasteful number, since it uses less digits than its factorization.

64434523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90425.

The product of its digits is 34560, while the sum is 31.

The square root of 64434523 is about 8027.1117470732. Note that the first 3 decimals coincide. The cubic root of 64434523 is about 400.9032152206.

Adding to 64434523 its reverse (32543446), we get a palindrome (96977969).

The spelling of 64434523 in words is "sixty-four million, four hundred thirty-four thousand, five hundred twenty-three".