67820001 has 16 divisors (see below), whose sum is σ = 93709824. Its totient is φ = 43593984.

The previous prime is 67819967. The next prime is 67820029. The reversal of 67820001 is 10002876.

It is not a de Polignac number, because 67820001 - 2⁶ = 67819937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (67820801) 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, 9840 + ... + 15246.

It is an arithmetic number, because the mean of its divisors is an integer number (5856864).

Almost surely, 2^67820001 is an apocalyptic number.

It is an amenable number.

67820001 is a deficient number, since it is larger than the sum of its proper divisors (25889823).

67820001 is a wasteful number, since it uses less digits than its factorization.

67820001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5560.

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 67820001 is about 8235.2899766796. The cubic root of 67820001 is about 407.8050479136.

Adding to 67820001 its reverse (10002876), we get a palindrome (77822877).

The spelling of 67820001 in words is "sixty-seven million, eight hundred twenty thousand, one".