630771 has 4 divisors (see below), whose sum is σ = 841032. Its totient is φ = 420512.

The previous prime is 630737. The next prime is 630797. The reversal of 630771 is 177036.

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

It is a cyclic number.

It is not a de Polignac number, because 630771 - 2¹⁰ = 629747 is a prime.

It is a D-number.

630771 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (630701) 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, 105126 + ... + 105131.

It is an arithmetic number, because the mean of its divisors is an integer number (210258).

2⁶³⁰⁷⁷¹ is an apocalyptic number.

630771 is a deficient number, since it is larger than the sum of its proper divisors (210261).

630771 is a wasteful number, since it uses less digits than its factorization.

630771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210260.

The product of its (nonzero) digits is 882, while the sum is 24.

The square root of 630771 is about 794.2109291618. The cubic root of 630771 is about 85.7611454090.

The spelling of 630771 in words is "six hundred thirty thousand, seven hundred seventy-one".