630471383 has 4 divisors (see below), whose sum is σ = 630534240. Its totient is φ = 630408528.

The previous prime is 630471371. The next prime is 630471419. The reversal of 630471383 is 383174036.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 630471383 - 2¹⁰ = 630470359 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 (630471983) 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, 12638 + ... + 37691.

It is an arithmetic number, because the mean of its divisors is an integer number (157633560).

Almost surely, 2^630471383 is an apocalyptic number.

630471383 is a deficient number, since it is larger than the sum of its proper divisors (62857).

630471383 is a wasteful number, since it uses less digits than its factorization.

630471383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62856.

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 630471383 is about 25109.1892143096. The cubic root of 630471383 is about 857.4756437534.

The spelling of 630471383 in words is "six hundred thirty million, four hundred seventy-one thousand, three hundred eighty-three".