1098864687 has 8 divisors (see below), whose sum is σ = 1473622704. Its totient is φ = 728341568.

The previous prime is 1098864647. The next prime is 1098864691. The reversal of 1098864687 is 7864688901.

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 1098864687 - 2⁶ = 1098864623 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1098864647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1058118 + ... + 1059155.

It is an arithmetic number, because the mean of its divisors is an integer number (184202838).

Almost surely, 2^1098864687 is an apocalyptic number.

1098864687 is a deficient number, since it is larger than the sum of its proper divisors (374758017).

1098864687 is a wasteful number, since it uses less digits than its factorization.

1098864687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2117449.

The product of its (nonzero) digits is 4644864, while the sum is 57.

The square root of 1098864687 is about 33149.1279975809. The cubic root of 1098864687 is about 1031.9248534986.

The spelling of 1098864687 in words is "one billion, ninety-eight million, eight hundred sixty-four thousand, six hundred eighty-seven".