64775413 has 4 divisors (see below), whose sum is σ = 64830028. Its totient is φ = 64720800.

The previous prime is 64775411. The next prime is 64775437. The reversal of 64775413 is 31457746.

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 6436369 + 58339044 = 2537^2 + 7638^2 .

It is a cyclic number.

It is not a de Polignac number, because 64775413 - 2¹ = 64775411 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64775411) 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, 25488 + ... + 27913.

It is an arithmetic number, because the mean of its divisors is an integer number (16207507).

Almost surely, 2^64775413 is an apocalyptic number.

It is an amenable number.

64775413 is a deficient number, since it is larger than the sum of its proper divisors (54615).

64775413 is a wasteful number, since it uses less digits than its factorization.

64775413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54614.

The product of its digits is 70560, while the sum is 37.

The square root of 64775413 is about 8048.3174017927. The cubic root of 64775413 is about 401.6089631663.

The spelling of 64775413 in words is "sixty-four million, seven hundred seventy-five thousand, four hundred thirteen".