68954551 has 4 divisors (see below), whose sum is σ = 69077592. Its totient is φ = 68831512.

The previous prime is 68954549. The next prime is 68954573. The reversal of 68954551 is 15545986.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 68954551 - 2¹ = 68954549 is a prime.

It is a super-2 number, since 2×68954551² = 9509460207223202, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68954498 and 68954507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68954351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60676 + ... + 61801.

It is an arithmetic number, because the mean of its divisors is an integer number (17269398).

Almost surely, 2^68954551 is an apocalyptic number.

68954551 is a deficient number, since it is larger than the sum of its proper divisors (123041).

68954551 is a wasteful number, since it uses less digits than its factorization.

68954551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123040.

The product of its digits is 216000, while the sum is 43.

The square root of 68954551 is about 8303.8877039613. The cubic root of 68954551 is about 410.0665190506.

The spelling of 68954551 in words is "sixty-eight million, nine hundred fifty-four thousand, five hundred fifty-one".