2087399677 has 6 divisors (see below), whose sum is σ = 2294414654. Its totient is φ = 1897635960.

The previous prime is 2087399627. The next prime is 2087399693. The reversal of 2087399677 is 7769937802.

It can be written as a sum of positive squares in only one way, i.e., 1201384921 + 886014756 = 34661^2 + 29766^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2087399677 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 (2087399627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8625498 + ... + 8625739.

Almost surely, 2^2087399677 is an apocalyptic number.

It is an amenable number.

2087399677 is a deficient number, since it is larger than the sum of its proper divisors (207014977).

2087399677 is a wasteful number, since it uses less digits than its factorization.

2087399677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17251259 (or 17251248 counting only the distinct ones).

The product of its (nonzero) digits is 8001504, while the sum is 58.

The square root of 2087399677 is about 45688.0693069865. The cubic root of 2087399677 is about 1278.0128012788.

The spelling of 2087399677 in words is "two billion, eighty-seven million, three hundred ninety-nine thousand, six hundred seventy-seven".