678422488 has 16 divisors (see below), whose sum is σ = 1272466080. Its totient is φ = 339098208.

The previous prime is 678422483. The next prime is 678422489. The reversal of 678422488 is 884224876.

It is a super-2 number, since 2×678422488² = 920514144448220288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678422483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14881 + ... + 39727.

It is an arithmetic number, because the mean of its divisors is an integer number (79529130).

Almost surely, 2^678422488 is an apocalyptic number.

It is an amenable number.

678422488 is a deficient number, since it is larger than the sum of its proper divisors (594043592).

678422488 is a wasteful number, since it uses less digits than its factorization.

678422488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28266 (or 28262 counting only the distinct ones).

The product of its digits is 1376256, while the sum is 49.

The square root of 678422488 is about 26046.5446460754. The cubic root of 678422488 is about 878.6854028558.

The spelling of 678422488 in words is "six hundred seventy-eight million, four hundred twenty-two thousand, four hundred eighty-eight".