4651987 has 2 divisors, whose sum is σ = 4651988. Its totient is φ = 4651986.

The previous prime is 4651981. The next prime is 4652027. The reversal of 4651987 is 7891564.

It is an a-pointer prime, because the next prime (4652027) can be obtained adding 4651987 to its sum of digits (40).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4651987 - 2⁷ = 4651859 is a prime.

It is a Chen prime.

4651987 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (4651981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2325993 + 2325994.

It is an arithmetic number, because the mean of its divisors is an integer number (2325994).

Almost surely, 2^4651987 is an apocalyptic number.

4651987 is a deficient number, since it is larger than the sum of its proper divisors (1).

4651987 is an equidigital number, since it uses as much as digits as its factorization.

4651987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 40.

The square root of 4651987 is about 2156.8465406700. The cubic root of 4651987 is about 166.9345243939.

The spelling of 4651987 in words is "four million, six hundred fifty-one thousand, nine hundred eighty-seven".