64540410 has 64 divisors (see below), whose sum is σ = 169858944. Its totient is φ = 15564800.

The previous prime is 64540391. The next prime is 64540423. The reversal of 64540410 is 1404546.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 84430 + ... + 85190.

It is an arithmetic number, because the mean of its divisors is an integer number (2654046).

Almost surely, 2^64540410 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64540410, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84929472).

64540410 is an abundant number, since it is smaller than the sum of its proper divisors (105318534).

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

64540410 is a wasteful number, since it uses less digits than its factorization.

64540410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1039.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 64540410 is about 8033.7046248913. The cubic root of 64540410 is about 401.1227000798.

Adding to 64540410 its reverse (1404546), we get a palindrome (65944956).

The spelling of 64540410 in words is "sixty-four million, five hundred forty thousand, four hundred ten".