65276261 has 4 divisors (see below), whose sum is σ = 65293152. Its totient is φ = 65259372.

The previous prime is 65276257. The next prime is 65276273. The reversal of 65276261 is 16267256.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 65276261 - 2² = 65276257 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65273261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 536 + ... + 11438.

It is an arithmetic number, because the mean of its divisors is an integer number (16323288).

Almost surely, 2^65276261 is an apocalyptic number.

It is an amenable number.

65276261 is a deficient number, since it is larger than the sum of its proper divisors (16891).

65276261 is a wasteful number, since it uses less digits than its factorization.

65276261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16890.

The product of its digits is 30240, while the sum is 35.

The square root of 65276261 is about 8079.3725622724. The cubic root of 65276261 is about 402.6413962543.

The spelling of 65276261 in words is "sixty-five million, two hundred seventy-six thousand, two hundred sixty-one".