6978624340 has 12 divisors (see below), whose sum is σ = 14655111156. Its totient is φ = 2791449728.

The previous prime is 6978624329. The next prime is 6978624347. The reversal of 6978624340 is 434268796.

It can be written as a sum of positive squares in 2 ways, for example, as 2525464516 + 4453159824 = 50254^2 + 66732^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6978624347) 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, 174465589 + ... + 174465628.

It is an arithmetic number, because the mean of its divisors is an integer number (1221259263).

Almost surely, 2^6978624340 is an apocalyptic number.

It is an amenable number.

6978624340 is an abundant number, since it is smaller than the sum of its proper divisors (7676486816).

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

6978624340 is a wasteful number, since it uses less digits than its factorization.

6978624340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348931226 (or 348931224 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 49.

The square root of 6978624340 is about 83538.1609804765. The cubic root of 6978624340 is about 1910.9820466317.

The spelling of 6978624340 in words is "six billion, nine hundred seventy-eight million, six hundred twenty-four thousand, three hundred forty".