64172361 has 16 divisors (see below), whose sum is σ = 94173120. Its totient is φ = 38545920.

The previous prime is 64172359. The next prime is 64172377. The reversal of 64172361 is 16327146.

64172361 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 64172361 - 2¹ = 64172359 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64172321) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 4876 + ... + 12333.

It is an arithmetic number, because the mean of its divisors is an integer number (5885820).

Almost surely, 2^64172361 is an apocalyptic number.

It is an amenable number.

64172361 is a deficient number, since it is larger than the sum of its proper divisors (30000759).

64172361 is a wasteful number, since it uses less digits than its factorization.

64172361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17336.

The product of its digits is 6048, while the sum is 30.

The square root of 64172361 is about 8010.7653192438. The cubic root of 64172361 is about 400.3587635423.

It can be divided in two parts, 6417 and 2361, that added together give a palindrome (8778).

The spelling of 64172361 in words is "sixty-four million, one hundred seventy-two thousand, three hundred sixty-one".