68639050 has 24 divisors (see below), whose sum is σ = 128033100. Its totient is φ = 27377280.

The previous prime is 68639017. The next prime is 68639069. The reversal of 68639050 is 5093686.

It can be written as a sum of positive squares in 6 ways, for example, as 4782969 + 63856081 = 2187^2 + 7991^2 .

It is a super-2 number, since 2×68639050² = 9422638369805000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17686 + ... + 21214.

Almost surely, 2^68639050 is an apocalyptic number.

68639050 is a deficient number, since it is larger than the sum of its proper divisors (59394050).

68639050 is a wasteful number, since it uses less digits than its factorization.

68639050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3930 (or 3925 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 68639050 is about 8284.8687376446. The cubic root of 68639050 is about 409.4401440529.

The spelling of 68639050 in words is "sixty-eight million, six hundred thirty-nine thousand, fifty".