68815408 has 10 divisors (see below), whose sum is σ = 133329884. Its totient is φ = 34407696.

The previous prime is 68815403. The next prime is 68815451. The reversal of 68815408 is 80451886.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (68815403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2150466 + ... + 2150497.

Almost surely, 2^68815408 is an apocalyptic number.

It is an amenable number.

68815408 is a deficient number, since it is larger than the sum of its proper divisors (64514476).

68815408 is a wasteful number, since it uses less digits than its factorization.

68815408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4300971 (or 4300965 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 40.

The square root of 68815408 is about 8295.5052890104. The cubic root of 68815408 is about 409.7905096751.

The spelling of 68815408 in words is "sixty-eight million, eight hundred fifteen thousand, four hundred eight".