630471 has 4 divisors (see below), whose sum is σ = 840632. Its totient is φ = 420312.

The previous prime is 630467. The next prime is 630473. The reversal of 630471 is 174036.

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

It is not a de Polignac number, because 630471 - 2² = 630467 is a prime.

It is a super-3 number, since 3×630471³ = 751824717251931333, which contains 333 as substring.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630473) 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, 105076 + ... + 105081.

It is an arithmetic number, because the mean of its divisors is an integer number (210158).

2⁶³⁰⁴⁷¹ is an apocalyptic number.

630471 is a deficient number, since it is larger than the sum of its proper divisors (210161).

630471 is a wasteful number, since it uses less digits than its factorization.

630471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210160.

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 630471 is about 794.0220399964. The cubic root of 630471 is about 85.7475470120.

The spelling of 630471 in words is "six hundred thirty thousand, four hundred seventy-one".