64839532 has 18 divisors (see below), whose sum is σ = 116316284. Its totient is φ = 31625760.

The previous prime is 64839529. The next prime is 64839557. The reversal of 64839532 is 23593846.

It is a plaindrome in base 11.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1903 + ... + 11545.

Almost surely, 2^64839532 is an apocalyptic number.

It is an amenable number.

64839532 is a deficient number, since it is larger than the sum of its proper divisors (51476752).

64839532 is a wasteful number, since it uses less digits than its factorization.

64839532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9729 (or 9686 counting only the distinct ones).

The product of its digits is 155520, while the sum is 40.

The square root of 64839532 is about 8052.2997957105. The cubic root of 64839532 is about 401.7414325297.

The spelling of 64839532 in words is "sixty-four million, eight hundred thirty-nine thousand, five hundred thirty-two".