64769536 has 80 divisors (see below), whose sum is σ = 143678304. Its totient is φ = 28975104.

The previous prime is 64769531. The next prime is 64769563. The reversal of 64769536 is 63596746.

Its product of digits (816480) is a multiple of the sum of its prime divisors (315).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64769531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 246141 + ... + 246403.

Almost surely, 2^64769536 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 64769536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71839152).

64769536 is an abundant number, since it is smaller than the sum of its proper divisors (78908768).

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

64769536 is a wasteful number, since it uses less digits than its factorization.

64769536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331 (or 315 counting only the distinct ones).

The product of its digits is 816480, while the sum is 46.

The square root of 64769536 is about 8047.9522861409. The cubic root of 64769536 is about 401.5968169565.

The spelling of 64769536 in words is "sixty-four million, seven hundred sixty-nine thousand, five hundred thirty-six".