65426261 has 4 divisors (see below), whose sum is σ = 65758572. Its totient is φ = 65093952.

The previous prime is 65426243. The next prime is 65426267. The reversal of 65426261 is 16262456.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 28143025 + 37283236 = 5305^2 + 6106^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65426261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65426267) 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, 165860 + ... + 166253.

It is an arithmetic number, because the mean of its divisors is an integer number (16439643).

Almost surely, 2^65426261 is an apocalyptic number.

It is an amenable number.

65426261 is a deficient number, since it is larger than the sum of its proper divisors (332311).

65426261 is a wasteful number, since it uses less digits than its factorization.

65426261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332310.

The product of its digits is 17280, while the sum is 32.

The square root of 65426261 is about 8088.6501346022. The cubic root of 65426261 is about 402.9495736605.

The spelling of 65426261 in words is "sixty-five million, four hundred twenty-six thousand, two hundred sixty-one".