698897545 has 12 divisors (see below), whose sum is σ = 844014276. Its totient is φ = 555582240.

The previous prime is 698897519. The next prime is 698897587. The reversal of 698897545 is 545798896.

It can be written as a sum of positive squares in 2 ways, for example, as 388996729 + 309900816 = 19723^2 + 17604^2 .

It is not a de Polignac number, because 698897545 - 2²¹ = 696800393 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 130215 + ... + 135475.

It is an arithmetic number, because the mean of its divisors is an integer number (70334523).

Almost surely, 2^698897545 is an apocalyptic number.

It is an amenable number.

698897545 is a deficient number, since it is larger than the sum of its proper divisors (145116731).

698897545 is an equidigital number, since it uses as much as digits as its factorization.

698897545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5592 (or 5429 counting only the distinct ones).

The product of its digits is 21772800, while the sum is 61.

The square root of 698897545 is about 26436.6704597988. The cubic root of 698897545 is about 887.4376262453.

The spelling of 698897545 in words is "six hundred ninety-eight million, eight hundred ninety-seven thousand, five hundred forty-five".