68821495 has 16 divisors (see below), whose sum is σ = 85691520. Its totient is φ = 52998400.

The previous prime is 68821483. The next prime is 68821499. The reversal of 68821495 is 59412886.

It is a happy number.

It is not a de Polignac number, because 68821495 - 2¹¹ = 68819447 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68821499) 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 15 ways as a sum of consecutive naturals, for example, 75090 + ... + 76000.

It is an arithmetic number, because the mean of its divisors is an integer number (5355720).

Almost surely, 2^68821495 is an apocalyptic number.

68821495 is a deficient number, since it is larger than the sum of its proper divisors (16870025).

68821495 is a wasteful number, since it uses less digits than its factorization.

68821495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1466.

The product of its digits is 138240, while the sum is 43.

The square root of 68821495 is about 8295.8721663246. The cubic root of 68821495 is about 409.8025918593.

The spelling of 68821495 in words is "sixty-eight million, eight hundred twenty-one thousand, four hundred ninety-five".