1020202687 has 24 divisors (see below), whose sum is σ = 1231158960. Its totient is φ = 841921920.

The previous prime is 1020202669. The next prime is 1020202721. The reversal of 1020202687 is 7862020201.

It is not a de Polignac number, because 1020202687 - 2²⁷ = 885984959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020202637) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 648612 + ... + 650182.

It is an arithmetic number, because the mean of its divisors is an integer number (51298290).

Almost surely, 2^1020202687 is an apocalyptic number.

1020202687 is a deficient number, since it is larger than the sum of its proper divisors (210956273).

1020202687 is a wasteful number, since it uses less digits than its factorization.

1020202687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2071 (or 2064 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 1020202687 is about 31940.6118757922. The cubic root of 1020202687 is about 1006.6893813981.

Adding to 1020202687 its reverse (7862020201), we get a palindrome (8882222888).

The spelling of 1020202687 in words is "one billion, twenty million, two hundred two thousand, six hundred eighty-seven".