65431061 has 8 divisors (see below), whose sum is σ = 66768384. Its totient is φ = 64104480.

The previous prime is 65431043. The next prime is 65431081. The reversal of 65431061 is 16013456.

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 65431061 - 2⁶ = 65430997 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 65431061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65431031) 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, 10241 + ... + 15353.

It is an arithmetic number, because the mean of its divisors is an integer number (8346048).

Almost surely, 2^65431061 is an apocalyptic number.

It is an amenable number.

65431061 is a deficient number, since it is larger than the sum of its proper divisors (1337323).

65431061 is a wasteful number, since it uses less digits than its factorization.

65431061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5371.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 65431061 is about 8088.9468412149. The cubic root of 65431061 is about 402.9594275562.

The spelling of 65431061 in words is "sixty-five million, four hundred thirty-one thousand, sixty-one".