64721414 has 16 divisors (see below), whose sum is σ = 103048848. Its totient is φ = 30381312.

The previous prime is 64721383. The next prime is 64721441. The reversal of 64721414 is 41412746.

It is a happy number.

64721414 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 2×64721414² = 8377722860318792, which contains 22 as substring.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 12914 + ... + 17210.

It is an arithmetic number, because the mean of its divisors is an integer number (6440553).

Almost surely, 2^64721414 is an apocalyptic number.

64721414 is a deficient number, since it is larger than the sum of its proper divisors (38327434).

64721414 is a wasteful number, since it uses less digits than its factorization.

64721414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4759.

The product of its digits is 5376, while the sum is 29.

The square root of 64721414 is about 8044.9620260135. The cubic root of 64721414 is about 401.4973338181.

The spelling of 64721414 in words is "sixty-four million, seven hundred twenty-one thousand, four hundred fourteen".