2620601 has 4 divisors (see below), whose sum is σ = 2774772. Its totient is φ = 2466432.

The previous prime is 2620591. The next prime is 2620619. The reversal of 2620601 is 1060262.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1263376 + 1357225 = 1124^2 + 1165^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2620601 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 154153 = 2620601 / (2 + 6 + 2 + 0 + 6 + 0 + 1).

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2620601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2620661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77060 + ... + 77093.

It is an arithmetic number, because the mean of its divisors is an integer number (693693).

2^2620601 is an apocalyptic number.

It is an amenable number.

2620601 is a deficient number, since it is larger than the sum of its proper divisors (154171).

2620601 is a wasteful number, since it uses less digits than its factorization.

2620601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154170.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2620601 is about 1618.8270444986. The cubic root of 2620601 is about 137.8691085444.

Adding to 2620601 its reverse (1060262), we get a palindrome (3680863).

The spelling of 2620601 in words is "two million, six hundred twenty thousand, six hundred one".