68841553 has 16 divisors (see below), whose sum is σ = 79128576. Its totient is φ = 59279440.

The previous prime is 68841527. The next prime is 68841559. The reversal of 68841553 is 35514886.

It is a de Polignac number, because none of the positive numbers 2^k-68841553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68841559) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25800 + ... + 28342.

It is an arithmetic number, because the mean of its divisors is an integer number (4945536).

Almost surely, 2^68841553 is an apocalyptic number.

It is an amenable number.

68841553 is a deficient number, since it is larger than the sum of its proper divisors (10287023).

68841553 is a wasteful number, since it uses less digits than its factorization.

68841553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2684.

The product of its digits is 115200, while the sum is 40.

The square root of 68841553 is about 8297.0809927347. The cubic root of 68841553 is about 409.8424002649.

The spelling of 68841553 in words is "sixty-eight million, eight hundred forty-one thousand, five hundred fifty-three".