64441532 has 12 divisors (see below), whose sum is σ = 114131976. Its totient is φ = 31832400.

The previous prime is 64441519. The next prime is 64441537. The reversal of 64441532 is 23514446.

It is a super-2 number, since 2×64441532² = 8305422093014048, which contains 22 as substring.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 64441495 and 64441504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64441537) 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, 96719 + ... + 97382.

It is an arithmetic number, because the mean of its divisors is an integer number (9510998).

Almost surely, 2^64441532 is an apocalyptic number.

It is an amenable number.

64441532 is a deficient number, since it is larger than the sum of its proper divisors (49690444).

64441532 is a wasteful number, since it uses less digits than its factorization.

64441532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194188 (or 194186 counting only the distinct ones).

The product of its digits is 11520, while the sum is 29.

The square root of 64441532 is about 8027.5483181355. The cubic root of 64441532 is about 400.9177510554.

Adding to 64441532 its reverse (23514446), we get a palindrome (87955978).

The spelling of 64441532 in words is "sixty-four million, four hundred forty-one thousand, five hundred thirty-two".