2791655 has 8 divisors (see below), whose sum is σ = 3547152. Its totient is φ = 2101888.

The previous prime is 2791639. The next prime is 2791661. The reversal of 2791655 is 5561972.

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

It is a cyclic number.

It is not a de Polignac number, because 2791655 - 2⁴ = 2791639 is a prime.

It is a super-4 number, since 4×2791655⁴ (a number of 27 digits) contains 4444 as substring.

It is a congruent number.

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, 16337 + ... + 16506.

It is an arithmetic number, because the mean of its divisors is an integer number (443394).

2^2791655 is an apocalyptic number.

2791655 is a deficient number, since it is larger than the sum of its proper divisors (755497).

2791655 is a wasteful number, since it uses less digits than its factorization.

2791655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32865.

The product of its digits is 18900, while the sum is 35.

The square root of 2791655 is about 1670.8246466940. The cubic root of 2791655 is about 140.8058121901.

It can be divided in two parts, 2 and 791655, that multiplied together give a triangular number (1583310 = T₁₇₇₉).

The spelling of 2791655 in words is "two million, seven hundred ninety-one thousand, six hundred fifty-five".