63248709 has 4 divisors (see below), whose sum is σ = 84331616. Its totient is φ = 42165804.

The previous prime is 63248693. The next prime is 63248719. The reversal of 63248709 is 90784236.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 63248709 - 2⁴ = 63248693 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 (63248719) 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, 10541449 + ... + 10541454.

It is an arithmetic number, because the mean of its divisors is an integer number (21082904).

Almost surely, 2^63248709 is an apocalyptic number.

It is an amenable number.

63248709 is a deficient number, since it is larger than the sum of its proper divisors (21082907).

63248709 is a wasteful number, since it uses less digits than its factorization.

63248709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21082906.

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 63248709 is about 7952.9056954047. The cubic root of 63248709 is about 398.4286456133.

The spelling of 63248709 in words is "sixty-three million, two hundred forty-eight thousand, seven hundred nine".