63765413 has 4 divisors (see below), whose sum is σ = 64968588. Its totient is φ = 62562240.

The previous prime is 63765409. The next prime is 63765421. The reversal of 63765413 is 31456736.

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 56806369 + 6959044 = 7537^2 + 2638^2 .

It is a cyclic number.

It is not a de Polignac number, because 63765413 - 2² = 63765409 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 (63755413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 601508 + ... + 601613.

It is an arithmetic number, because the mean of its divisors is an integer number (16242147).

Almost surely, 2^63765413 is an apocalyptic number.

It is an amenable number.

63765413 is a deficient number, since it is larger than the sum of its proper divisors (1203175).

63765413 is a wasteful number, since it uses less digits than its factorization.

63765413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1203174.

The product of its digits is 45360, while the sum is 35.

The square root of 63765413 is about 7985.3248525029. The cubic root of 63765413 is about 399.5106787392.

The spelling of 63765413 in words is "sixty-three million, seven hundred sixty-five thousand, four hundred thirteen".