65745961 has 4 divisors (see below), whose sum is σ = 66727312. Its totient is φ = 64764612.

The previous prime is 65745943. The next prime is 65745973. The reversal of 65745961 is 16954756.

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 not a de Polignac number, because 65745961 - 2¹⁷ = 65614889 is a prime.

It is a super-3 number, since 3×65745961³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65745941) 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, 490575 + ... + 490708.

It is an arithmetic number, because the mean of its divisors is an integer number (16681828).

Almost surely, 2^65745961 is an apocalyptic number.

It is an amenable number.

65745961 is a deficient number, since it is larger than the sum of its proper divisors (981351).

65745961 is an equidigital number, since it uses as much as digits as its factorization.

65745961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 981350.

The product of its digits is 226800, while the sum is 43.

The square root of 65745961 is about 8108.3883108790. The cubic root of 65745961 is about 403.6048340859.

The spelling of 65745961 in words is "sixty-five million, seven hundred forty-five thousand, nine hundred sixty-one".