2638955 has 8 divisors (see below), whose sum is σ = 3454704. Its totient is φ = 1919200.

The previous prime is 2638949. The next prime is 2638973. The reversal of 2638955 is 5598362.

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

It is not a de Polignac number, because 2638955 - 2¹⁰ = 2637931 is a prime.

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, 23936 + ... + 24045.

It is an arithmetic number, because the mean of its divisors is an integer number (431838).

2^2638955 is an apocalyptic number.

2638955 is a deficient number, since it is larger than the sum of its proper divisors (815749).

2638955 is a wasteful number, since it uses less digits than its factorization.

2638955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47997.

The product of its digits is 64800, while the sum is 38.

The square root of 2638955 is about 1624.4860725780. The cubic root of 2638955 is about 138.1902263545.

The spelling of 2638955 in words is "two million, six hundred thirty-eight thousand, nine hundred fifty-five".