698328761 has 4 divisors (see below), whose sum is σ = 752046372. Its totient is φ = 644611152.

The previous prime is 698328749. The next prime is 698328767. The reversal of 698328761 is 167823896.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 76125625 + 622203136 = 8725^2 + 24944^2 .

It is a cyclic number.

It is not a de Polignac number, because 698328761 - 2¹⁸ = 698066617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (698328767) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26858786 + ... + 26858811.

It is an arithmetic number, because the mean of its divisors is an integer number (188011593).

Almost surely, 2^698328761 is an apocalyptic number.

It is an amenable number.

698328761 is a deficient number, since it is larger than the sum of its proper divisors (53717611).

698328761 is a wasteful number, since it uses less digits than its factorization.

698328761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53717610.

The product of its digits is 870912, while the sum is 50.

The square root of 698328761 is about 26425.9107884667. The cubic root of 698328761 is about 887.1968196979.

The spelling of 698328761 in words is "six hundred ninety-eight million, three hundred twenty-eight thousand, seven hundred sixty-one".