698550641 has 16 divisors (see below), whose sum is σ = 739355904. Its totient is φ = 658673664.

The previous prime is 698550631. The next prime is 698550647. The reversal of 698550641 is 146055896.

It is a cyclic number.

It is not a de Polignac number, because 698550641 - 2¹⁸ = 698288497 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 698550592 and 698550601.

It is not an unprimeable number, because it can be changed into a prime (698550647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 787100 + ... + 787986.

It is an arithmetic number, because the mean of its divisors is an integer number (46209744).

Almost surely, 2^698550641 is an apocalyptic number.

It is an amenable number.

698550641 is a deficient number, since it is larger than the sum of its proper divisors (40805263).

698550641 is a wasteful number, since it uses less digits than its factorization.

698550641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1360.

The product of its (nonzero) digits is 259200, while the sum is 44.

The square root of 698550641 is about 26430.1086074197. The cubic root of 698550641 is about 887.2907727643.

The spelling of 698550641 in words is "six hundred ninety-eight million, five hundred fifty thousand, six hundred forty-one".