68487811 has 16 divisors (see below), whose sum is σ = 80352000. Its totient is φ = 57163680.

The previous prime is 68487803. The next prime is 68487817. The reversal of 68487811 is 11878486.

It is not a de Polignac number, because 68487811 - 2³ = 68487803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68487817) 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, 44940 + ... + 46438.

It is an arithmetic number, because the mean of its divisors is an integer number (5022000).

Almost surely, 2^68487811 is an apocalyptic number.

68487811 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

68487811 is a deficient number, since it is larger than the sum of its proper divisors (11864189).

68487811 is a wasteful number, since it uses less digits than its factorization.

68487811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1674.

The product of its digits is 86016, while the sum is 43.

The square root of 68487811 is about 8275.7362814435. The cubic root of 68487811 is about 409.1392033385.

The spelling of 68487811 in words is "sixty-eight million, four hundred eighty-seven thousand, eight hundred eleven".