64243534 has 8 divisors (see below), whose sum is σ = 96522840. Its totient is φ = 32069256.

The previous prime is 64243519. The next prime is 64243573. The reversal of 64243534 is 43534246.

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

It is a junction number, because it is equal to n+sod(n) for n = 64243496 and 64243505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24709 + ... + 27184.

It is an arithmetic number, because the mean of its divisors is an integer number (12065355).

Almost surely, 2^64243534 is an apocalyptic number.

64243534 is a deficient number, since it is larger than the sum of its proper divisors (32279306).

64243534 is a wasteful number, since it uses less digits than its factorization.

64243534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52514.

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

The square root of 64243534 is about 8015.2064227941. The cubic root of 64243534 is about 400.5067203152.

The spelling of 64243534 in words is "sixty-four million, two hundred forty-three thousand, five hundred thirty-four".