64489752 has 24 divisors (see below), whose sum is σ = 174659940. Its totient is φ = 21496560.

The previous prime is 64489727. The next prime is 64489787. The reversal of 64489752 is 25798446.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×64489752² = 8317856226043008, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 64489698 and 64489707.

It is a congruent number.

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, 447774 + ... + 447917.

Almost surely, 2^64489752 is an apocalyptic number.

It is an amenable number.

64489752 is an abundant number, since it is smaller than the sum of its proper divisors (110170188).

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

64489752 is a wasteful number, since it uses less digits than its factorization.

64489752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 895703 (or 895696 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 64489752 is about 8030.5511641481. The cubic root of 64489752 is about 401.0177250598.

The spelling of 64489752 in words is "sixty-four million, four hundred eighty-nine thousand, seven hundred fifty-two".