698614644 has 48 divisors (see below), whose sum is σ = 2006281088. Its totient is φ = 184249728.

The previous prime is 698614603. The next prime is 698614687. The reversal of 698614644 is 446416896.

It is a happy number.

It is a super-2 number, since 2×698614644² = 976124841622493472, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 698614593 and 698614602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 318787 + ... + 320970.

Almost surely, 2^698614644 is an apocalyptic number.

It is an amenable number.

698614644 is an abundant number, since it is smaller than the sum of its proper divisors (1307666444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

698614644 is a wasteful number, since it uses less digits than its factorization.

698614644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639784 (or 639782 counting only the distinct ones).

The product of its digits is 995328, while the sum is 48.

The square root of 698614644 is about 26431.3193768302. The cubic root of 698614644 is about 887.3178705550.

The spelling of 698614644 in words is "six hundred ninety-eight million, six hundred fourteen thousand, six hundred forty-four".