698488491 has 8 divisors (see below), whose sum is σ = 946585744. Its totient is φ = 458025120.

The previous prime is 698488489. The next prime is 698488493. The reversal of 698488491 is 194884896.

It is an interprime number because it is at equal distance from previous prime (698488489) and next prime (698488493).

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

It is not a de Polignac number, because 698488491 - 2¹ = 698488489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (698488493) 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, 1908256 + ... + 1908621.

It is an arithmetic number, because the mean of its divisors is an integer number (118323218).

Almost surely, 2^698488491 is an apocalyptic number.

698488491 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

698488491 is a deficient number, since it is larger than the sum of its proper divisors (248097253).

698488491 is a wasteful number, since it uses less digits than its factorization.

698488491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3816941.

The product of its digits is 3981312, while the sum is 57.

The square root of 698488491 is about 26428.9328388416. The cubic root of 698488491 is about 887.2644579186.

The spelling of 698488491 in words is "six hundred ninety-eight million, four hundred eighty-eight thousand, four hundred ninety-one".