1678679698 has 16 divisors (see below), whose sum is σ = 2600752896. Its totient is φ = 811793520.

The previous prime is 1678679693. The next prime is 1678679699. The reversal of 1678679698 is 8969768761.

It is not an unprimeable number, because it can be changed into a prime (1678679693) 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, 115465 + ... + 129187.

It is an arithmetic number, because the mean of its divisors is an integer number (162547056).

Almost surely, 2^1678679698 is an apocalyptic number.

1678679698 is a deficient number, since it is larger than the sum of its proper divisors (922073198).

1678679698 is a wasteful number, since it uses less digits than its factorization.

1678679698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15729.

The product of its digits is 54867456, while the sum is 67.

The square root of 1678679698 is about 40971.6938629586. The cubic root of 1678679698 is about 1188.4728894106.

The spelling of 1678679698 in words is "one billion, six hundred seventy-eight million, six hundred seventy-nine thousand, six hundred ninety-eight".