68000553 has 20 divisors (see below), whose sum is σ = 101806980. Its totient is φ = 45232992.

The previous prime is 68000531. The next prime is 68000567. The reversal of 68000553 is 35500086.

It can be written as a sum of positive squares in 2 ways, for example, as 16548624 + 51451929 = 4068^2 + 7173^2 .

It is not a de Polignac number, because 68000553 - 2⁵ = 68000521 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (68000353) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 60763 + ... + 61871.

It is an arithmetic number, because the mean of its divisors is an integer number (5090349).

Almost surely, 2^68000553 is an apocalyptic number.

It is an amenable number.

68000553 is a deficient number, since it is larger than the sum of its proper divisors (33806427).

68000553 is a wasteful number, since it uses less digits than its factorization.

68000553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1878 (or 1869 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 68000553 is about 8246.2447817173. The cubic root of 68000553 is about 408.1666166374.

The spelling of 68000553 in words is "sixty-eight million, five hundred fifty-three", and thus it is an aban number.