64211090 has 32 divisors (see below), whose sum is σ = 119070000. Its totient is φ = 24920064.

The previous prime is 64211087. The next prime is 64211113. The reversal of 64211090 is 9011246.

It is a happy number.

64211090 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 30327049 + 33884041 = 5507^2 + 5821^2 .

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, 50786 + ... + 52034.

Almost surely, 2^64211090 is an apocalyptic number.

64211090 is a deficient number, since it is larger than the sum of its proper divisors (54858910).

64211090 is a wasteful number, since it uses less digits than its factorization.

64211090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1406.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 64211090 is about 8013.1822642443. The cubic root of 64211090 is about 400.4392882214.

The spelling of 64211090 in words is "sixty-four million, two hundred eleven thousand, ninety".