68640362 has 16 divisors (see below), whose sum is σ = 117775680. Its totient is φ = 29390688.

The previous prime is 68640359. The next prime is 68640379. The reversal of 68640362 is 26304686.

It is a super-2 number, since 2×68640362² = 9422998590982088, which contains 22 as substring.

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, 28073 + ... + 30419.

It is an arithmetic number, because the mean of its divisors is an integer number (7360980).

Almost surely, 2^68640362 is an apocalyptic number.

68640362 is a deficient number, since it is larger than the sum of its proper divisors (49135318).

68640362 is a wasteful number, since it uses less digits than its factorization.

68640362 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4445.

The product of its (nonzero) digits is 41472, while the sum is 35.

The square root of 68640362 is about 8284.9479177603. The cubic root of 68640362 is about 409.4427527820.

The spelling of 68640362 in words is "sixty-eight million, six hundred forty thousand, three hundred sixty-two".