65811461 has 4 divisors (see below), whose sum is σ = 65918400. Its totient is φ = 65704524.

The previous prime is 65811451. The next prime is 65811463. The reversal of 65811461 is 16411856.

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 65811461 - 2¹⁸ = 65549317 is a prime.

It is a super-2 number, since 2×65811461² = 8662296797909042, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65811463) 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, 52541 + ... + 53778.

It is an arithmetic number, because the mean of its divisors is an integer number (16479600).

Almost surely, 2^65811461 is an apocalyptic number.

It is an amenable number.

65811461 is a deficient number, since it is larger than the sum of its proper divisors (106939).

65811461 is a wasteful number, since it uses less digits than its factorization.

65811461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106938.

The product of its digits is 5760, while the sum is 32.

The square root of 65811461 is about 8112.4263324852. The cubic root of 65811461 is about 403.7388212390.

The spelling of 65811461 in words is "sixty-five million, eight hundred eleven thousand, four hundred sixty-one".