68026553 has 6 divisors (see below), whose sum is σ = 79132986. Its totient is φ = 58308432.

The previous prime is 68026523. The next prime is 68026579. The reversal of 68026553 is 35562086.

It can be written as a sum of positive squares in only one way, i.e., 38291344 + 29735209 = 6188^2 + 5453^2 .

It is not a de Polignac number, because 68026553 - 2⁸ = 68026297 is a prime.

It is a super-2 number, since 2×68026553² = 9255223826123618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68026513) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 694100 + ... + 694197.

It is an arithmetic number, because the mean of its divisors is an integer number (13188831).

Almost surely, 2^68026553 is an apocalyptic number.

It is an amenable number.

68026553 is a deficient number, since it is larger than the sum of its proper divisors (11106433).

68026553 is a wasteful number, since it uses less digits than its factorization.

68026553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1388311 (or 1388304 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 68026553 is about 8247.8211062074. The cubic root of 68026553 is about 408.2186308212.

The spelling of 68026553 in words is "sixty-eight million, twenty-six thousand, five hundred fifty-three".