64481250 has 96 divisors (see below), whose sum is σ = 170614080. Its totient is φ = 16200000.

The previous prime is 64481191. The next prime is 64481251. The reversal of 64481250 is 5218446.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64481251) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 356160 + ... + 356340.

It is an arithmetic number, because the mean of its divisors is an integer number (1777230).

Almost surely, 2^64481250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64481250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85307040).

64481250 is an abundant number, since it is smaller than the sum of its proper divisors (106132830).

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

64481250 is a wasteful number, since it uses less digits than its factorization.

64481250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230 (or 210 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 64481250 is about 8030.0217932456. The cubic root of 64481250 is about 401.0001015748. Note that the first 3 decimals are identical.

Adding to 64481250 its reverse (5218446), we get a palindrome (69699696).

The spelling of 64481250 in words is "sixty-four million, four hundred eighty-one thousand, two hundred fifty".