64747452 has 96 divisors (see below), whose sum is σ = 190955520. Its totient is φ = 16585920.

The previous prime is 64747439. The next prime is 64747453. The reversal of 64747452 is 25474746.

It is a self number, because there is not a number n which added to its sum of digits gives 64747452.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64747453) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 72553 + ... + 73439.

It is an arithmetic number, because the mean of its divisors is an integer number (1989120).

Almost surely, 2^64747452 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64747452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95477760).

64747452 is an abundant number, since it is smaller than the sum of its proper divisors (126208068).

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

64747452 is a wasteful number, since it uses less digits than its factorization.

64747452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 991 (or 989 counting only the distinct ones).

The product of its digits is 188160, while the sum is 39.

The square root of 64747452 is about 8046.5801431416. The cubic root of 64747452 is about 401.5511685811.

The spelling of 64747452 in words is "sixty-four million, seven hundred forty-seven thousand, four hundred fifty-two".