1206630 has 64 divisors (see below), whose sum is σ = 3326400. Its totient is φ = 311040.

The previous prime is 1206619. The next prime is 1206637. The reversal of 1206630 is 366021.

Added to its reverse (366021) it gives a triangular number (1572651 = T₁₇₇₃).

It is a happy number.

1206630 is a `hidden beast` number, since 1 + 2 + 0 + 663 + 0 = 666.

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 (1206637) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11016 + ... + 11124.

It is an arithmetic number, because the mean of its divisors is an integer number (51975).

2^1206630 is an apocalyptic number.

1206630 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 1206630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1663200).

1206630 is an abundant number, since it is smaller than the sum of its proper divisors (2119770).

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

1206630 is a wasteful number, since it uses less digits than its factorization.

1206630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166 (or 160 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1206630 is about 1098.4671137544. The cubic root of 1206630 is about 106.4612038813.

Adding to 1206630 its reverse (366021), we get a triangular number (1572651 = T₁₇₇₃).

The spelling of 1206630 in words is "one million, two hundred six thousand, six hundred thirty".