2991654 has 40 divisors (see below), whose sum is σ = 6838920. Its totient is φ = 977184.

The previous prime is 2991649. The next prime is 2991661. The reversal of 2991654 is 4561992.

2991654 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 9402 + ... + 9714.

It is an arithmetic number, because the mean of its divisors is an integer number (170973).

2^2991654 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2991654, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3419460).

2991654 is an abundant number, since it is smaller than the sum of its proper divisors (3847266).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2991654 is a wasteful number, since it uses less digits than its factorization.

2991654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386 (or 377 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The square root of 2991654 is about 1729.6398469046. The cubic root of 2991654 is about 144.0910882027.

It can be divided in two parts, 299 and 1654, that added together give a triangular number (1953 = T₆₂).

The spelling of 2991654 in words is "two million, nine hundred ninety-one thousand, six hundred fifty-four".