68840550 has 48 divisors (see below), whose sum is σ = 189697680. Its totient is φ = 18357120.

The previous prime is 68840539. The next prime is 68840561. The reversal of 68840550 is 5504886.

It is a happy number.

68840550 is a `hidden beast` number, since 68 + 8 + 40 + 550 = 666.

It is an interprime number because it is at equal distance from previous prime (68840539) and next prime (68840561).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24147 + ... + 26846.

It is an arithmetic number, because the mean of its divisors is an integer number (3952035).

Almost surely, 2^68840550 is an apocalyptic number.

68840550 is an abundant number, since it is smaller than the sum of its proper divisors (120857130).

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

68840550 is a wasteful number, since it uses less digits than its factorization.

68840550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51014 (or 51003 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The square root of 68840550 is about 8297.0205495708. The cubic root of 68840550 is about 409.8404098298.

The spelling of 68840550 in words is "sixty-eight million, eight hundred forty thousand, five hundred fifty".