679467680640 has 288 divisors, whose sum is σ = 2729355206760. Its totient is φ = 155306833920.

The previous prime is 679467680623. The next prime is 679467680651. The reversal of 679467680640 is 46086764976.

679467680640 is a `hidden beast` number, since 6 + 79 + 467 + 68 + 0 + 6 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 921466 + ... + 1485945.

Almost surely, 2^679467680640 is an apocalyptic number.

679467680640 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

679467680640 is an abundant number, since it is smaller than the sum of its proper divisors (2049887526120).

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

679467680640 is a wasteful number, since it uses less digits than its factorization.

679467680640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2407450 (or 2407428 counting only the distinct ones).

The product of its (nonzero) digits is 73156608, while the sum is 63.

The spelling of 679467680640 in words is "six hundred seventy-nine billion, four hundred sixty-seven million, six hundred eighty thousand, six hundred forty".