68487818 has 16 divisors (see below), whose sum is σ = 123587520. Its totient is φ = 27806976.

The previous prime is 68487817. The next prime is 68487829. The reversal of 68487818 is 81878486.

It is a super-2 number, since 2×68487818² = 9381162428802248, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 128471 + ... + 129002.

It is an arithmetic number, because the mean of its divisors is an integer number (7724220).

Almost surely, 2^68487818 is an apocalyptic number.

68487818 is a deficient number, since it is larger than the sum of its proper divisors (55099702).

68487818 is a wasteful number, since it uses less digits than its factorization.

68487818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257501.

The product of its digits is 688128, while the sum is 50.

The square root of 68487818 is about 8275.7367043666. The cubic root of 68487818 is about 409.1392172776.

The spelling of 68487818 in words is "sixty-eight million, four hundred eighty-seven thousand, eight hundred eighteen".