64409371 has 8 divisors (see below), whose sum is σ = 69493424. Its totient is φ = 59343840.

The previous prime is 64409357. The next prime is 64409381. The reversal of 64409371 is 17390446.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64409371 - 2⁵ = 64409339 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64409321) 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 7 ways as a sum of consecutive naturals, for example, 3085 + ... + 11761.

It is an arithmetic number, because the mean of its divisors is an integer number (8686678).

Almost surely, 2^64409371 is an apocalyptic number.

64409371 is a deficient number, since it is larger than the sum of its proper divisors (5084053).

64409371 is a wasteful number, since it uses less digits than its factorization.

64409371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9261.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 64409371 is about 8025.5449036187. The cubic root of 64409371 is about 400.8510442750.

The spelling of 64409371 in words is "sixty-four million, four hundred nine thousand, three hundred seventy-one".