64508250 has 32 divisors (see below), whose sum is σ = 161014464. Its totient is φ = 17202000.

The previous prime is 64508239. The next prime is 64508291. The reversal of 64508250 is 5280546.

64508250 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×64508250² = 8322628636125000, which contains 22 as substring.

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

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42256 + ... + 43755.

It is an arithmetic number, because the mean of its divisors is an integer number (5031702).

Almost surely, 2^64508250 is an apocalyptic number.

64508250 is an abundant number, since it is smaller than the sum of its proper divisors (96506214).

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

64508250 is a wasteful number, since it uses less digits than its factorization.

64508250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86031 (or 86021 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 64508250 is about 8031.7028082468. The cubic root of 64508250 is about 401.0560635374.

Adding to 64508250 its reverse (5280546), we get a palindrome (69788796).

The spelling of 64508250 in words is "sixty-four million, five hundred eight thousand, two hundred fifty".