1005022987 has 2 divisors, whose sum is σ = 1005022988. Its totient is φ = 1005022986.

The previous prime is 1005022969. The next prime is 1005023011. The reversal of 1005022987 is 7892205001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1005022987 - 2²⁷ = 870805259 is a prime.

It is not a weakly prime, because it can be changed into another prime (1005022937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 502511493 + 502511494.

It is an arithmetic number, because the mean of its divisors is an integer number (502511494).

Almost surely, 2^1005022987 is an apocalyptic number.

1005022987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1005022987 is an equidigital number, since it uses as much as digits as its factorization.

1005022987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 1005022987 is about 31702.0975173568. The cubic root of 1005022987 is about 1001.6715334193.

Adding to 1005022987 its reverse (7892205001), we get a palindrome (8897227988).

It can be divided in two parts, 1005022 and 987, that added together give a square (1006009 = 1003²).

The spelling of 1005022987 in words is "one billion, five million, twenty-two thousand, nine hundred eighty-seven".