2611630 has 16 divisors (see below), whose sum is σ = 5372640. Its totient is φ = 895392.

The previous prime is 2611621. The next prime is 2611633. The reversal of 2611630 is 361162.

It is a super-2 number, since 2×2611630² = 13641222513800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2611598 and 2611607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2611633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18585 + ... + 18724.

It is an arithmetic number, because the mean of its divisors is an integer number (335790).

2^2611630 is an apocalyptic number.

2611630 is an abundant number, since it is smaller than the sum of its proper divisors (2761010).

2611630 is a wasteful number, since it uses less digits than its factorization.

2611630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37323.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 2611630 is about 1616.0538357369. The cubic root of 2611630 is about 137.7116080593.

Adding to 2611630 its reverse (361162), we get a palindrome (2972792).

It can be divided in two parts, 261 and 1630, that added together give a triangular number (1891 = T₆₁).

The spelling of 2611630 in words is "two million, six hundred eleven thousand, six hundred thirty".