64549056 has 112 divisors (see below), whose sum is σ = 200729088. Its totient is φ = 18048000.

The previous prime is 64549049. The next prime is 64549081. The reversal of 64549056 is 65094546.

It is a super-2 number, since 2×64549056² = 8333161260982272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26281 + ... + 28631.

It is an arithmetic number, because the mean of its divisors is an integer number (1792224).

Almost surely, 2^64549056 is an apocalyptic number.

64549056 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64549056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100364544).

64549056 is an abundant number, since it is smaller than the sum of its proper divisors (136180032).

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

64549056 is a wasteful number, since it uses less digits than its factorization.

64549056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2390 (or 2380 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 39.

The square root of 64549056 is about 8034.2427147803. The cubic root of 64549056 is about 401.1406110910.

Subtracting 64549056 from its reverse (65094546), we obtain a triangular number (545490 = T₁₀₄₄).

It can be divided in two parts, 645490 and 56, that added together give a palindrome (645546).

The spelling of 64549056 in words is "sixty-four million, five hundred forty-nine thousand, fifty-six".