65654145 has 20 divisors (see below), whose sum is σ = 117691860. Its totient is φ = 35015328.

The previous prime is 65654131. The next prime is 65654179. The reversal of 65654145 is 54145656.

It can be written as a sum of positive squares in 2 ways, for example, as 41062464 + 24591681 = 6408^2 + 4959^2 .

It is not a de Polignac number, because 65654145 - 2⁶ = 65654081 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 80650 + ... + 81459.

It is an arithmetic number, because the mean of its divisors is an integer number (5884593).

Almost surely, 2^65654145 is an apocalyptic number.

It is an amenable number.

65654145 is a deficient number, since it is larger than the sum of its proper divisors (52037715).

65654145 is a wasteful number, since it uses less digits than its factorization.

65654145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162126 (or 162117 counting only the distinct ones).

The product of its digits is 72000, while the sum is 36.

The square root of 65654145 is about 8102.7245417822. The cubic root of 65654145 is about 403.4168648945.

The spelling of 65654145 in words is "sixty-five million, six hundred fifty-four thousand, one hundred forty-five".