64769145 has 16 divisors (see below), whose sum is σ = 118435200. Its totient is φ = 29608704.

The previous prime is 64769141. The next prime is 64769147. The reversal of 64769145 is 54196746.

It is not a de Polignac number, because 64769145 - 2² = 64769141 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 64769097 and 64769106.

It is not an unprimeable number, because it can be changed into a prime (64769141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 308320 + ... + 308529.

It is an arithmetic number, because the mean of its divisors is an integer number (7402200).

Almost surely, 2^64769145 is an apocalyptic number.

It is an amenable number.

64769145 is a deficient number, since it is larger than the sum of its proper divisors (53666055).

64769145 is a wasteful number, since it uses less digits than its factorization.

64769145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616864.

The product of its digits is 181440, while the sum is 42.

The square root of 64769145 is about 8047.9279942107. The cubic root of 64769145 is about 401.5960088365.

The spelling of 64769145 in words is "sixty-four million, seven hundred sixty-nine thousand, one hundred forty-five".