4621565887 has 2 divisors, whose sum is σ = 4621565888. Its totient is φ = 4621565886.

The previous prime is 4621565857. The next prime is 4621565933. The reversal of 4621565887 is 7885651264.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4621565887 - 2¹⁹ = 4621041599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4621565827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2310782943 + 2310782944.

It is an arithmetic number, because the mean of its divisors is an integer number (2310782944).

Almost surely, 2^4621565887 is an apocalyptic number.

4621565887 is a deficient number, since it is larger than the sum of its proper divisors (1).

4621565887 is an equidigital number, since it uses as much as digits as its factorization.

4621565887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3225600, while the sum is 52.

The square root of 4621565887 is about 67982.0997542736. The cubic root of 4621565887 is about 1665.6984552000.

The spelling of 4621565887 in words is "four billion, six hundred twenty-one million, five hundred sixty-five thousand, eight hundred eighty-seven".