64205361 has 24 divisors (see below), whose sum is σ = 101653344. Its totient is φ = 38727360.

The previous prime is 64205353. The next prime is 64205369. The reversal of 64205361 is 16350246.

It is an interprime number because it is at equal distance from previous prime (64205353) and next prime (64205369).

It is not a de Polignac number, because 64205361 - 2³ = 64205353 is a prime.

It is a super-2 number, since 2×64205361² = 8244656762280642, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64205369) 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, 21045 + ... + 23901.

It is an arithmetic number, because the mean of its divisors is an integer number (4235556).

Almost surely, 2^64205361 is an apocalyptic number.

It is an amenable number.

64205361 is a deficient number, since it is larger than the sum of its proper divisors (37447983).

64205361 is a wasteful number, since it uses less digits than its factorization.

64205361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3101 (or 3098 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 64205361 is about 8012.8247828091. The cubic root of 64205361 is about 400.4273786228.

It can be divided in two parts, 6420 and 5361, that added together give a triangular number (11781 = T₁₅₃).

The spelling of 64205361 in words is "sixty-four million, two hundred five thousand, three hundred sixty-one".