63144685 has 4 divisors (see below), whose sum is σ = 75773628. Its totient is φ = 50515744.

The previous prime is 63144671. The next prime is 63144703. The reversal of 63144685 is 58644136.

It is a happy number.

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 25371369 + 37773316 = 5037^2 + 6146^2 .

It is a cyclic number.

It is not a de Polignac number, because 63144685 - 2²¹ = 61047533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6314464 + ... + 6314473.

It is an arithmetic number, because the mean of its divisors is an integer number (18943407).

Almost surely, 2^63144685 is an apocalyptic number.

It is an amenable number.

63144685 is a deficient number, since it is larger than the sum of its proper divisors (12628943).

63144685 is a wasteful number, since it uses less digits than its factorization.

63144685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12628942.

The product of its digits is 69120, while the sum is 37.

The square root of 63144685 is about 7946.3630045449. The cubic root of 63144685 is about 398.2100963086.

The spelling of 63144685 in words is "sixty-three million, one hundred forty-four thousand, six hundred eighty-five".