68702240 has 24 divisors (see below), whose sum is σ = 162309420. Its totient is φ = 27480832.

The previous prime is 68702237. The next prime is 68702267. The reversal of 68702240 is 4220786.

It can be written as a sum of positive squares in 2 ways, for example, as 66129424 + 2572816 = 8132^2 + 1604^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214535 + ... + 214854.

Almost surely, 2^68702240 is an apocalyptic number.

It is an amenable number.

68702240 is an abundant number, since it is smaller than the sum of its proper divisors (93607180).

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

68702240 is a wasteful number, since it uses less digits than its factorization.

68702240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429404 (or 429396 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 68702240 is about 8288.6814391675. The cubic root of 68702240 is about 409.5657508187.

The spelling of 68702240 in words is "sixty-eight million, seven hundred two thousand, two hundred forty".