698638512 has 240 divisors, whose sum is σ = 2253466880. Its totient is φ = 184757760.

The previous prime is 698638489. The next prime is 698638541. The reversal of 698638512 is 215836896.

It is a happy number.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 1434333 + ... + 1434819.

Almost surely, 2^698638512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 698638512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1126733440).

698638512 is an abundant number, since it is smaller than the sum of its proper divisors (1554828368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

698638512 is a wasteful number, since it uses less digits than its factorization.

698638512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552 (or 535 counting only the distinct ones).

The product of its digits is 622080, while the sum is 48.

The square root of 698638512 is about 26431.7708827842. The cubic root of 698638512 is about 887.3279754399.

The spelling of 698638512 in words is "six hundred ninety-eight million, six hundred thirty-eight thousand, five hundred twelve".