64211490 has 96 divisors (see below), whose sum is σ = 192067200. Its totient is φ = 14579712.

The previous prime is 64211479. The next prime is 64211491. The reversal of 64211490 is 9411246.

64211490 is a `hidden beast` number, since 642 + 1 + 14 + 9 + 0 = 666.

64211490 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64211491) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 142786 + ... + 143234.

It is an arithmetic number, because the mean of its divisors is an integer number (2000700).

Almost surely, 2^64211490 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64211490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96033600).

64211490 is an abundant number, since it is smaller than the sum of its proper divisors (127855710).

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

64211490 is a wasteful number, since it uses less digits than its factorization.

64211490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 696 (or 693 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 64211490 is about 8013.2072230787. The cubic root of 64211490 is about 400.4401197256.

The spelling of 64211490 in words is "sixty-four million, two hundred eleven thousand, four hundred ninety".