65204161 has 8 divisors (see below), whose sum is σ = 71447904. Its totient is φ = 59013120.

The previous prime is 65204147. The next prime is 65204177. The reversal of 65204161 is 16140256.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 65204161 - 2¹⁹ = 64679873 is a prime.

It is a super-2 number, since 2×65204161² = 8503165223427842, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (65204131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10560 + ... + 15553.

It is an arithmetic number, because the mean of its divisors is an integer number (8930988).

Almost surely, 2^65204161 is an apocalyptic number.

It is an amenable number.

65204161 is a deficient number, since it is larger than the sum of its proper divisors (6243743).

65204161 is a wasteful number, since it uses less digits than its factorization.

65204161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26351.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 65204161 is about 8074.9093493364. The cubic root of 65204161 is about 402.4930976273.

The spelling of 65204161 in words is "sixty-five million, two hundred four thousand, one hundred sixty-one".