64001532 has 48 divisors (see below), whose sum is σ = 180714240. Its totient is φ = 17210112.

The previous prime is 64001507. The next prime is 64001537. The reversal of 64001532 is 23510046.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 64001499 and 64001508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64001537) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20982 + ... + 23837.

It is an arithmetic number, because the mean of its divisors is an integer number (3764880).

Almost surely, 2^64001532 is an apocalyptic number.

It is an amenable number.

64001532 is an abundant number, since it is smaller than the sum of its proper divisors (116712708).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64001532 is a wasteful number, since it uses less digits than its factorization.

64001532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44850 (or 44848 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 64001532 is about 8000.0957494270. The cubic root of 64001532 is about 400.0031916412.

Adding to 64001532 its reverse (23510046), we get a palindrome (87511578).

The spelling of 64001532 in words is "sixty-four million, one thousand, five hundred thirty-two".