698648643 has 96 divisors (see below), whose sum is σ = 1375875072. Its totient is φ = 330393600.

The previous prime is 698648593. The next prime is 698648647. The reversal of 698648643 is 346846896.

It is not a de Polignac number, because 698648643 - 2⁸ = 698648387 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 698648643.

It is not an unprimeable number, because it can be changed into a prime (698648647) 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 95 ways as a sum of consecutive naturals, for example, 364255 + ... + 366167.

It is an arithmetic number, because the mean of its divisors is an integer number (14332032).

Almost surely, 2^698648643 is an apocalyptic number.

698648643 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

698648643 is a deficient number, since it is larger than the sum of its proper divisors (677226429).

698648643 is a wasteful number, since it uses less digits than its factorization.

698648643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1985 (or 1982 counting only the distinct ones).

The product of its digits is 5971968, while the sum is 54.

The square root of 698648643 is about 26431.9625264565. The cubic root of 698648643 is about 887.3322644850.

The spelling of 698648643 in words is "six hundred ninety-eight million, six hundred forty-eight thousand, six hundred forty-three".