68954381 has 4 divisors (see below), whose sum is σ = 69587100. Its totient is φ = 68321664.

The previous prime is 68954371. The next prime is 68954383. The reversal of 68954381 is 18345986.

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

It can be written as a sum of positive squares in 2 ways, for example, as 55741156 + 13213225 = 7466^2 + 3635^2 .

It is a cyclic number.

It is not a de Polignac number, because 68954381 - 2⁶ = 68954317 is a prime.

It is a super-2 number, since 2×68954381² = 9509413318186322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68954383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 316196 + ... + 316413.

It is an arithmetic number, because the mean of its divisors is an integer number (17396775).

Almost surely, 2^68954381 is an apocalyptic number.

It is an amenable number.

68954381 is a deficient number, since it is larger than the sum of its proper divisors (632719).

68954381 is a wasteful number, since it uses less digits than its factorization.

68954381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632718.

The product of its digits is 207360, while the sum is 44.

The square root of 68954381 is about 8303.8774677858. The cubic root of 68954381 is about 410.0661820588.

The spelling of 68954381 in words is "sixty-eight million, nine hundred fifty-four thousand, three hundred eighty-one".