64012145 has 4 divisors (see below), whose sum is σ = 76814580. Its totient is φ = 51209712.

The previous prime is 64012133. The next prime is 64012147. The reversal of 64012145 is 54121046.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 48385936 + 15626209 = 6956^2 + 3953^2 .

It is a cyclic number.

It is not a de Polignac number, because 64012145 - 2⁸ = 64011889 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64012145.

It is not an unprimeable number, because it can be changed into a prime (64012147) 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, 6401210 + ... + 6401219.

It is an arithmetic number, because the mean of its divisors is an integer number (19203645).

Almost surely, 2^64012145 is an apocalyptic number.

It is an amenable number.

64012145 is a deficient number, since it is larger than the sum of its proper divisors (12802435).

64012145 is a wasteful number, since it uses less digits than its factorization.

64012145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12802434.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 64012145 is about 8000.7590264924. The cubic root of 64012145 is about 400.0253004830.

The spelling of 64012145 in words is "sixty-four million, twelve thousand, one hundred forty-five".