2687149 has 2 divisors, whose sum is σ = 2687150. Its totient is φ = 2687148.

The previous prime is 2687143. The next prime is 2687161. The reversal of 2687149 is 9417862.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2673225 + 13924 = 1635^2 + 118^2 .

It is a cyclic number.

It is not a de Polignac number, because 2687149 - 2³ = 2687141 is a prime.

2687149 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2687141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1343574 + 1343575.

It is an arithmetic number, because the mean of its divisors is an integer number (1343575).

2^2687149 is an apocalyptic number.

It is an amenable number.

2687149 is a deficient number, since it is larger than the sum of its proper divisors (1).

2687149 is an equidigital number, since it uses as much as digits as its factorization.

2687149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 37.

The square root of 2687149 is about 1639.2525735835. The cubic root of 2687149 is about 139.0263911382.

The spelling of 2687149 in words is "two million, six hundred eighty-seven thousand, one hundred forty-nine".