2660624 has 10 divisors (see below), whose sum is σ = 5154990. Its totient is φ = 1330304.

The previous prime is 2660621. The next prime is 2660639. The reversal of 2660624 is 4260662.

It can be written as a sum of positive squares in only one way, i.e., 2347024 + 313600 = 1532^2 + 560^2 .

It is a super-4 number, since 4×2660624⁴ (a number of 27 digits) contains 4444 as substring.

It is a d-powerful number, because it can be written as 2¹¹ + 6⁴ + 6⁷ + 0 + 6⁷ + 2²¹ + 4⁴ .

It is a junction number, because it is equal to n+sod(n) for n = 2660593 and 2660602.

It is not an unprimeable number, because it can be changed into a prime (2660621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83129 + ... + 83160.

It is an arithmetic number, because the mean of its divisors is an integer number (515499).

2^2660624 is an apocalyptic number.

It is an amenable number.

2660624 is a deficient number, since it is larger than the sum of its proper divisors (2494366).

2660624 is a wasteful number, since it uses less digits than its factorization.

2660624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166297 (or 166291 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 2660624 is about 1631.1419312862. The cubic root of 2660624 is about 138.5674318774.

The spelling of 2660624 in words is "two million, six hundred sixty thousand, six hundred twenty-four".