687202261249 has 8 divisors (see below), whose sum is σ = 810708658688. Its totient is φ = 570029525280.

The previous prime is 687202261223. The next prime is 687202261261. The reversal of 687202261249 is 942162202786.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 687202261249 - 2¹³ = 687202253057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (687202261289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1583415132 + ... + 1583415565.

It is an arithmetic number, because the mean of its divisors is an integer number (101338582336).

Almost surely, 2^687202261249 is an apocalyptic number.

It is an amenable number.

687202261249 is a deficient number, since it is larger than the sum of its proper divisors (123506397439).

687202261249 is a wasteful number, since it uses less digits than its factorization.

687202261249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3166830735.

The product of its (nonzero) digits is 1161216, while the sum is 49.

The spelling of 687202261249 in words is "six hundred eighty-seven billion, two hundred two million, two hundred sixty-one thousand, two hundred forty-nine".