64450386 has 192 divisors, whose sum is σ = 193939200. Its totient is φ = 15240960.

The previous prime is 64450381. The next prime is 64450391. The reversal of 64450386 is 68305446.

64450386 is a `hidden beast` number, since 644 + 5 + 0 + 3 + 8 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (64450381) and next prime (64450391).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 64450386.

It is not an unprimeable number, because it can be changed into a prime (64450381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 882846 + ... + 882918.

It is an arithmetic number, because the mean of its divisors is an integer number (1010100).

Almost surely, 2^64450386 is an apocalyptic number.

64450386 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 64450386, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96969600).

64450386 is an abundant number, since it is smaller than the sum of its proper divisors (129488814).

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

64450386 is a wasteful number, since it uses less digits than its factorization.

64450386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126 (or 109 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The square root of 64450386 is about 8028.0997751647. The cubic root of 64450386 is about 400.9361116949.

The spelling of 64450386 in words is "sixty-four million, four hundred fifty thousand, three hundred eighty-six".