64674145 has 8 divisors (see below), whose sum is σ = 77725440. Its totient is φ = 51661680.

The previous prime is 64674143. The next prime is 64674149. The reversal of 64674145 is 54147646.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 64674145 - 2¹ = 64674143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64674143) 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, 5905 + ... + 12814.

It is an arithmetic number, because the mean of its divisors is an integer number (9715680).

Almost surely, 2^64674145 is an apocalyptic number.

It is an amenable number.

64674145 is a deficient number, since it is larger than the sum of its proper divisors (13051295).

64674145 is a wasteful number, since it uses less digits than its factorization.

64674145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19415.

The product of its digits is 80640, while the sum is 37.

The square root of 64674145 is about 8042.0236881024. The cubic root of 64674145 is about 401.3995660756.

The spelling of 64674145 in words is "sixty-four million, six hundred seventy-four thousand, one hundred forty-five".