1213671006 has 48 divisors (see below), whose sum is σ = 2745784080. Its totient is φ = 397269360.

The previous prime is 1213670981. The next prime is 1213671029. The reversal of 1213671006 is 6001763121.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1999155 + ... + 1999761.

It is an arithmetic number, because the mean of its divisors is an integer number (57203835).

Almost surely, 2^1213671006 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1213671006, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1372892040).

1213671006 is an abundant number, since it is smaller than the sum of its proper divisors (1532113074).

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

1213671006 is an frugal number, since it uses more digits than its factorization.

1213671006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1286 (or 673 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 1213671006 is about 34837.7813013401. The cubic root of 1213671006 is about 1066.6787885124.

The spelling of 1213671006 in words is "one billion, two hundred thirteen million, six hundred seventy-one thousand, six".