1161630 has 24 divisors (see below), whose sum is σ = 3020472. Its totient is φ = 309744.

The previous prime is 1161619. The next prime is 1161637. The reversal of 1161630 is 361611.

1161630 = 480² + 481² + ... + 484².

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 not an unprimeable number, because it can be changed into a prime (1161637) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6364 + ... + 6543.

It is an arithmetic number, because the mean of its divisors is an integer number (125853).

2^1161630 is an apocalyptic number.

1161630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1161630 is an abundant number, since it is smaller than the sum of its proper divisors (1858842).

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

1161630 is a wasteful number, since it uses less digits than its factorization.

1161630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12920 (or 12917 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 1161630 is about 1077.7894042901. The cubic root of 1161630 is about 105.1209490612.

The spelling of 1161630 in words is "one million, one hundred sixty-one thousand, six hundred thirty".