68421866 has 16 divisors (see below), whose sum is σ = 105513408. Its totient is φ = 33256800.

The previous prime is 68421863. The next prime is 68421877. The reversal of 68421866 is 66812486.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is not an unprimeable number, because it can be changed into a prime (68421863) 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, 24161 + ... + 26843.

It is an arithmetic number, because the mean of its divisors is an integer number (6594588).

Almost surely, 2^68421866 is an apocalyptic number.

68421866 is a deficient number, since it is larger than the sum of its proper divisors (37091542).

68421866 is a wasteful number, since it uses less digits than its factorization.

68421866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3037.

The product of its digits is 110592, while the sum is 41.

The square root of 68421866 is about 8271.7510842626. The cubic root of 68421866 is about 409.0078449326.

The spelling of 68421866 in words is "sixty-eight million, four hundred twenty-one thousand, eight hundred sixty-six".