64990350 has 84 divisors (see below), whose sum is σ = 181341816. Its totient is φ = 17321040.

The previous prime is 64990333. The next prime is 64990351. The reversal of 64990350 is 5309946.

64990350 is a `hidden beast` number, since 649 + 9 + 0 + 3 + 5 + 0 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64990351) 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 41 ways as a sum of consecutive naturals, for example, 35559 + ... + 37341.

Almost surely, 2^64990350 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64990350, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90670908).

64990350 is an abundant number, since it is smaller than the sum of its proper divisors (116351466).

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

64990350 is a wasteful number, since it uses less digits than its factorization.

64990350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1813 (or 1793 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The square root of 64990350 is about 8061.6592584902. The cubic root of 64990350 is about 402.0526774364.

The spelling of 64990350 in words is "sixty-four million, nine hundred ninety thousand, three hundred fifty".