64651242 has 16 divisors (see below), whose sum is σ = 129432960. Its totient is φ = 21528672.

The previous prime is 64651241. The next prime is 64651253. The reversal of 64651242 is 24215646.

It is not an unprimeable number, because it can be changed into a prime (64651241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1734 + ... + 11502.

It is an arithmetic number, because the mean of its divisors is an integer number (8089560).

Almost surely, 2^64651242 is an apocalyptic number.

64651242 is an abundant number, since it is smaller than the sum of its proper divisors (64781718).

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

64651242 is a wasteful number, since it uses less digits than its factorization.

64651242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10877.

The product of its digits is 11520, while the sum is 30.

The square root of 64651242 is about 8040.5996045071. The cubic root of 64651242 is about 401.3521780523.

Adding to 64651242 its reverse (24215646), we get a palindrome (88866888).

The spelling of 64651242 in words is "sixty-four million, six hundred fifty-one thousand, two hundred forty-two".