6978097858 has 8 divisors (see below), whose sum is σ = 10467608652. Its totient is φ = 3488894976.

The previous prime is 6978097837. The next prime is 6978097879. The reversal of 6978097858 is 8587908796.

It is an interprime number because it is at equal distance from previous prime (6978097837) and next prime (6978097879).

It can be written as a sum of positive squares in 2 ways, for example, as 6831518409 + 146579449 = 82653^2 + 12107^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 6978097793 and 6978097802.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7935 + ... + 118402.

Almost surely, 2^6978097858 is an apocalyptic number.

6978097858 is a deficient number, since it is larger than the sum of its proper divisors (3489510794).

6978097858 is a wasteful number, since it uses less digits than its factorization.

6978097858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153956.

The product of its (nonzero) digits is 60963840, while the sum is 67.

The square root of 6978097858 is about 83535.0097743455. The cubic root of 6978097858 is about 1910.9339892638.

The spelling of 6978097858 in words is "six billion, nine hundred seventy-eight million, ninety-seven thousand, eight hundred fifty-eight".