698009049 has 8 divisors (see below), whose sum is σ = 1034087520. Its totient is φ = 465339348.

The previous prime is 698009027. The next prime is 698009057. The reversal of 698009049 is 940900896.

It is not a de Polignac number, because 698009049 - 2⁷ = 698008921 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 698008995 and 698009013.

It is not an unprimeable number, because it can be changed into a prime (691009049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12926067 + ... + 12926120.

It is an arithmetic number, because the mean of its divisors is an integer number (129260940).

Almost surely, 2^698009049 is an apocalyptic number.

It is an amenable number.

698009049 is a deficient number, since it is larger than the sum of its proper divisors (336078471).

698009049 is a wasteful number, since it uses less digits than its factorization.

698009049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25852196 (or 25852190 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The square root of 698009049 is about 26419.8608815414. The cubic root of 698009049 is about 887.0614055570.

The spelling of 698009049 in words is "six hundred ninety-eight million, nine thousand, forty-nine".