20064465 has 12 divisors (see below), whose sum is σ = 34778484. Its totient is φ = 10701024.

The previous prime is 20064461. The next prime is 20064469. The reversal of 20064465 is 56446002.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20064461) and next prime (20064469).

It can be written as a sum of positive squares in 2 ways, for example, as 11350161 + 8714304 = 3369^2 + 2952^2 .

It is not a de Polignac number, because 20064465 - 2² = 20064461 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20064461) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 222894 + ... + 222983.

It is an arithmetic number, because the mean of its divisors is an integer number (2898207).

Almost surely, 2^20064465 is an apocalyptic number.

It is an amenable number.

20064465 is a deficient number, since it is larger than the sum of its proper divisors (14714019).

20064465 is a wasteful number, since it uses less digits than its factorization.

20064465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445888 (or 445885 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 20064465 is about 4479.3375626313. The cubic root of 20064465 is about 271.7330904276.

The spelling of 20064465 in words is "twenty million, sixty-four thousand, four hundred sixty-five".