64192145 has 4 divisors (see below), whose sum is σ = 77030580. Its totient is φ = 51353712.

The previous prime is 64192133. The next prime is 64192147. The reversal of 64192145 is 54129146.

It is a Cunningham number, because it is equal to 8012²+1.

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 23116864 + 41075281 = 4808^2 + 6409^2 .

It is a cyclic number.

It is not a de Polignac number, because 64192145 - 2⁶ = 64192081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64192147) 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, 6419210 + ... + 6419219.

It is an arithmetic number, because the mean of its divisors is an integer number (19257645).

Almost surely, 2^64192145 is an apocalyptic number.

It is an amenable number.

64192145 is a deficient number, since it is larger than the sum of its proper divisors (12838435).

64192145 is a wasteful number, since it uses less digits than its factorization.

64192145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12838434.

The product of its digits is 8640, while the sum is 32.

The square root of 64192145 is about 8012.0000624064. Note that the first 4 decimals coincide. The cubic root of 64192145 is about 400.3999021458.

The spelling of 64192145 in words is "sixty-four million, one hundred ninety-two thousand, one hundred forty-five".