698443647 has 16 divisors (see below), whose sum is σ = 1021191168. Its totient is φ = 421102080.

The previous prime is 698443597. The next prime is 698443649. The reversal of 698443647 is 746344896.

It is not a de Polignac number, because 698443647 - 2⁷ = 698443519 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 698443647.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (698443649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48463 + ... + 61200.

It is an arithmetic number, because the mean of its divisors is an integer number (63824448).

Almost surely, 2^698443647 is an apocalyptic number.

698443647 is a deficient number, since it is larger than the sum of its proper divisors (322747521).

698443647 is a wasteful number, since it uses less digits than its factorization.

698443647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109870.

The product of its digits is 3483648, while the sum is 51.

The square root of 698443647 is about 26428.0844368259. The cubic root of 698443647 is about 887.2454696130.

The spelling of 698443647 in words is "six hundred ninety-eight million, four hundred forty-three thousand, six hundred forty-seven".