68155450 has 48 divisors (see below), whose sum is σ = 140053536. Its totient is φ = 24468800.

The previous prime is 68155447. The next prime is 68155459. The reversal of 68155450 is 5455186.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (68155459) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44904 + ... + 46396.

It is an arithmetic number, because the mean of its divisors is an integer number (2917782).

Almost surely, 2^68155450 is an apocalyptic number.

68155450 is an abundant number, since it is smaller than the sum of its proper divisors (71898086).

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

68155450 is a wasteful number, since it uses less digits than its factorization.

68155450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1599 (or 1594 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 34.

The square root of 68155450 is about 8255.6314113458. The cubic root of 68155450 is about 408.4762996077.

The spelling of 68155450 in words is "sixty-eight million, one hundred fifty-five thousand, four hundred fifty".