63072745 has 8 divisors (see below), whose sum is σ = 76240584. Its totient is φ = 50089344.

The previous prime is 63072733. The next prime is 63072749. The reversal of 63072745 is 54727036.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 12988816 + 50083929 = 3604^2 + 7077^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63072745 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 63072745.

It is not an unprimeable number, because it can be changed into a prime (63072749) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45354 + ... + 46723.

It is an arithmetic number, because the mean of its divisors is an integer number (9530073).

Almost surely, 2^63072745 is an apocalyptic number.

It is an amenable number.

63072745 is a deficient number, since it is larger than the sum of its proper divisors (13167839).

63072745 is a wasteful number, since it uses less digits than its factorization.

63072745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92219.

The product of its (nonzero) digits is 35280, while the sum is 34.

The square root of 63072745 is about 7941.8351153874. The cubic root of 63072745 is about 398.0588134763.

The spelling of 63072745 in words is "sixty-three million, seventy-two thousand, seven hundred forty-five".