68680970 has 16 divisors (see below), whose sum is σ = 123775560. Its totient is φ = 27439104.

The previous prime is 68680949. The next prime is 68680981. The reversal of 68680970 is 7908686.

It can be written as a sum of positive squares in 4 ways, for example, as 21799561 + 46881409 = 4669^2 + 6847^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5594 + ... + 12986.

Almost surely, 2^68680970 is an apocalyptic number.

68680970 is a deficient number, since it is larger than the sum of its proper divisors (55094590).

68680970 is a wasteful number, since it uses less digits than its factorization.

68680970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8329.

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 68680970 is about 8287.3982648356. The cubic root of 68680970 is about 409.5234796949.

The spelling of 68680970 in words is "sixty-eight million, six hundred eighty thousand, nine hundred seventy".