2620105 has 8 divisors (see below), whose sum is σ = 3221064. Its totient is φ = 2044800.

The previous prime is 2620099. The next prime is 2620129. The reversal of 2620105 is 5010262.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 69696 + 2550409 = 264^2 + 1597^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2620105 - 2³ = 2620097 is a prime.

It is a super-2 number, since 2×2620105² = 13729900422050, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a nialpdrome in base 12.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6186 + ... + 6595.

It is an arithmetic number, because the mean of its divisors is an integer number (402633).

2^2620105 is an apocalyptic number.

It is an amenable number.

2620105 is a deficient number, since it is larger than the sum of its proper divisors (600959).

2620105 is a wasteful number, since it uses less digits than its factorization.

2620105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12827.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 2620105 is about 1618.6738399072. The cubic root of 2620105 is about 137.8604098537.

Adding to 2620105 its reverse (5010262), we get a palindrome (7630367).

The spelling of 2620105 in words is "two million, six hundred twenty thousand, one hundred five".