64051641 has 24 divisors (see below), whose sum is σ = 101002720. Its totient is φ = 40450752.

The previous prime is 64051627. The next prime is 64051643. The reversal of 64051641 is 14615046.

64051641 is a `hidden beast` number, since 640 + 5 + 16 + 4 + 1 = 666.

It is not a de Polignac number, because 64051641 - 2⁷ = 64051513 is a prime.

It is a super-2 number, since 2×64051641² = 8205225429585762, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64051643) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2320 + ... + 11553.

Almost surely, 2^64051641 is an apocalyptic number.

It is an amenable number.

64051641 is a deficient number, since it is larger than the sum of its proper divisors (36951079).

64051641 is a wasteful number, since it uses less digits than its factorization.

64051641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13907 (or 13895 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 64051641 is about 8003.2269116901. The cubic root of 64051641 is about 400.1075564931.

Adding to 64051641 its reverse (14615046), we get a palindrome (78666687).

The spelling of 64051641 in words is "sixty-four million, fifty-one thousand, six hundred forty-one".