68686074 has 12 divisors (see below), whose sum is σ = 148819866. Its totient is φ = 22895352.

The previous prime is 68686067. The next prime is 68686099. The reversal of 68686074 is 47068686.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 59954049 + 8732025 = 7743^2 + 2955^2 .

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1907929 + ... + 1907964.

Almost surely, 2^68686074 is an apocalyptic number.

68686074 is an abundant number, since it is smaller than the sum of its proper divisors (80133792).

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

68686074 is a wasteful number, since it uses less digits than its factorization.

68686074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3815901 (or 3815898 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The square root of 68686074 is about 8287.7061965299. The cubic root of 68686074 is about 409.5336239705.

The spelling of 68686074 in words is "sixty-eight million, six hundred eighty-six thousand, seventy-four".