631250063 has 4 divisors (see below), whose sum is σ = 646646448. Its totient is φ = 615853680.

The previous prime is 631250051. The next prime is 631250107. The reversal of 631250063 is 360052136.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-631250063 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 (631250003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7698131 + ... + 7698212.

It is an arithmetic number, because the mean of its divisors is an integer number (161661612).

Almost surely, 2^631250063 is an apocalyptic number.

631250063 is a deficient number, since it is larger than the sum of its proper divisors (15396385).

631250063 is a wasteful number, since it uses less digits than its factorization.

631250063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15396384.

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 631250063 is about 25124.6903065491. The cubic root of 631250063 is about 857.8285143485.

The spelling of 631250063 in words is "six hundred thirty-one million, two hundred fifty thousand, sixty-three".