68553513 has 16 divisors (see below), whose sum is σ = 116069760. Its totient is φ = 39173328.

The previous prime is 68553491. The next prime is 68553521. The reversal of 68553513 is 31535586.

It is not a de Polignac number, because 68553513 - 2⁶ = 68553449 is a prime.

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 not an unprimeable number, because it can be changed into a prime (68553113) 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, 181170 + ... + 181547.

It is an arithmetic number, because the mean of its divisors is an integer number (7254360).

Almost surely, 2^68553513 is an apocalyptic number.

68553513 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

68553513 is a deficient number, since it is larger than the sum of its proper divisors (47516247).

68553513 is a wasteful number, since it uses less digits than its factorization.

68553513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362733 (or 362727 counting only the distinct ones).

The product of its digits is 54000, while the sum is 36.

The square root of 68553513 is about 8279.7048860452. The cubic root of 68553513 is about 409.2699938747.

The spelling of 68553513 in words is "sixty-eight million, five hundred fifty-three thousand, five hundred thirteen".