676406688 has 48 divisors (see below), whose sum is σ = 1869023520. Its totient is φ = 213601536.

The previous prime is 676406683. The next prime is 676406713. The reversal of 676406688 is 886604676.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×676406688² = 915052015142258688, which contains 22 as substring.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 676406688.

It is not an unprimeable number, because it can be changed into a prime (676406683) 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, 183595 + ... + 187242.

It is an arithmetic number, because the mean of its divisors is an integer number (38937990).

Almost surely, 2^676406688 is an apocalyptic number.

It is an amenable number.

676406688 is an abundant number, since it is smaller than the sum of its proper divisors (1192616832).

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

676406688 is a wasteful number, since it uses less digits than its factorization.

676406688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370869 (or 370861 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 51.

The square root of 676406688 is about 26007.8197471453. The cubic root of 676406688 is about 877.8142587531.

The spelling of 676406688 in words is "six hundred seventy-six million, four hundred six thousand, six hundred eighty-eight".