676054640 has 80 divisors (see below), whose sum is σ = 1736728128. Its totient is φ = 243437568.

The previous prime is 676054619. The next prime is 676054669. The reversal of 676054640 is 46450676.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 676054594 and 676054603.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20474 + ... + 42086.

Almost surely, 2^676054640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 676054640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (868364064).

676054640 is an abundant number, since it is smaller than the sum of its proper divisors (1060673488).

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

676054640 is a wasteful number, since it uses less digits than its factorization.

676054640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21666 (or 21660 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 38.

The square root of 676054640 is about 26001.0507479986. The cubic root of 676054640 is about 877.6619409296.

The spelling of 676054640 in words is "six hundred seventy-six million, fifty-four thousand, six hundred forty".