2690651 has 4 divisors (see below), whose sum is σ = 2741472. Its totient is φ = 2639832.

The previous prime is 2690629. The next prime is 2690657. The reversal of 2690651 is 1560962.

2690651 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 2690651 - 2⁶ = 2690587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2690657) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 25331 + ... + 25436.

It is an arithmetic number, because the mean of its divisors is an integer number (685368).

2^2690651 is an apocalyptic number.

2690651 is a deficient number, since it is larger than the sum of its proper divisors (50821).

2690651 is an equidigital number, since it uses as much as digits as its factorization.

2690651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50820.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 2690651 is about 1640.3203955325. The cubic root of 2690651 is about 139.0867598378.

The spelling of 2690651 in words is "two million, six hundred ninety thousand, six hundred fifty-one".