671020630 has 48 divisors (see below), whose sum is σ = 1443091104. Its totient is φ = 220049280.

The previous prime is 671020621. The next prime is 671020631. The reversal of 671020630 is 36020176.

It is a junction number, because it is equal to n+sod(n) for n = 671020595 and 671020604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671020631) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27970 + ... + 46090.

It is an arithmetic number, because the mean of its divisors is an integer number (30064398).

Almost surely, 2^671020630 is an apocalyptic number.

671020630 is an abundant number, since it is smaller than the sum of its proper divisors (772070474).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

671020630 is a wasteful number, since it uses less digits than its factorization.

671020630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18181 (or 18158 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 671020630 is about 25904.0658970749. The cubic root of 671020630 is about 875.4781082334.

The spelling of 671020630 in words is "six hundred seventy-one million, twenty thousand, six hundred thirty".