698487861 has 8 divisors (see below), whose sum is σ = 980333920. Its totient is φ = 441150192.

The previous prime is 698487841. The next prime is 698487883. The reversal of 698487861 is 168784896.

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

It is not a de Polignac number, because 698487861 - 2¹¹ = 698485813 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57), and also a Moran number because the ratio is a prime number: 12254173 = 698487861 / (6 + 9 + 8 + 4 + 8 + 7 + 8 + 6 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (698487841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6127030 + ... + 6127143.

It is an arithmetic number, because the mean of its divisors is an integer number (122541740).

Almost surely, 2^698487861 is an apocalyptic number.

It is an amenable number.

698487861 is a deficient number, since it is larger than the sum of its proper divisors (281846059).

698487861 is a wasteful number, since it uses less digits than its factorization.

698487861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12254195.

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

The square root of 698487861 is about 26428.9209200830. The cubic root of 698487861 is about 887.2641911632.

The spelling of 698487861 in words is "six hundred ninety-eight million, four hundred eighty-seven thousand, eight hundred sixty-one".