6420068 has 6 divisors (see below), whose sum is σ = 11235126. Its totient is φ = 3210032.

The previous prime is 6420061. The next prime is 6420077. The reversal of 6420068 is 8600246.

It can be written as a sum of positive squares in only one way, i.e., 4761124 + 1658944 = 2182^2 + 1288^2 .

It is not an unprimeable number, because it can be changed into a prime (6420061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 802505 + ... + 802512.

It is an arithmetic number, because the mean of its divisors is an integer number (1872521).

Almost surely, 2^6420068 is an apocalyptic number.

It is an amenable number.

6420068 is a deficient number, since it is larger than the sum of its proper divisors (4815058).

6420068 is a wasteful number, since it uses less digits than its factorization.

6420068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1605021 (or 1605019 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 6420068 is about 2533.7853105581. The cubic root of 6420068 is about 185.8574079602.

The spelling of 6420068 in words is "six million, four hundred twenty thousand, sixty-eight".