1071630 has 96 divisors (see below), whose sum is σ = 3365280. Its totient is φ = 244944.

The previous prime is 1071601. The next prime is 1071641. The reversal of 1071630 is 361701.

It is a super-2 number, since 2×1071630² = 2296781713800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 47 ways as a sum of consecutive naturals, for example, 153087 + ... + 153093.

It is an arithmetic number, because the mean of its divisors is an integer number (35055).

2^1071630 is an apocalyptic number.

1071630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1071630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1682640).

1071630 is an abundant number, since it is smaller than the sum of its proper divisors (2293650).

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

1071630 is an frugal number, since it uses more digits than its factorization.

1071630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42 (or 17 counting only the distinct ones).

The product of its (nonzero) digits is 126, while the sum is 18.

The square root of 1071630 is about 1035.1956336848. The cubic root of 1071630 is about 102.3328228627.

The spelling of 1071630 in words is "one million, seventy-one thousand, six hundred thirty".