2920987 has 2 divisors, whose sum is σ = 2920988. Its totient is φ = 2920986.

The previous prime is 2920979. The next prime is 2921027. The reversal of 2920987 is 7890292.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2920987 - 2³ = 2920979 is a prime.

It is a d-powerful number, because it can be written as 2 + 9² + 2⁷ + 0 + 9² + 8⁷ + 7⁷ .

2920987 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (2920187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1460493 + 1460494.

It is an arithmetic number, because the mean of its divisors is an integer number (1460494).

2^2920987 is an apocalyptic number.

2920987 is a deficient number, since it is larger than the sum of its proper divisors (1).

2920987 is an equidigital number, since it uses as much as digits as its factorization.

2920987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 2920987 is about 1709.0895236938. The cubic root of 2920987 is about 142.9474924181.

The spelling of 2920987 in words is "two million, nine hundred twenty thousand, nine hundred eighty-seven".