67990001 has 8 divisors (see below), whose sum is σ = 71030400. Its totient is φ = 64956672.

The previous prime is 67989997. The next prime is 67990033. The reversal of 67990001 is 10009976.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 67990001 - 2² = 67989997 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 67990001.

It is not an unprimeable number, because it can be changed into a prime (67990061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31121 + ... + 33233.

It is an arithmetic number, because the mean of its divisors is an integer number (8878800).

Almost surely, 2^67990001 is an apocalyptic number.

It is an amenable number.

67990001 is a deficient number, since it is larger than the sum of its proper divisors (3040399).

67990001 is a wasteful number, since it uses less digits than its factorization.

67990001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3535.

The product of its (nonzero) digits is 3402, while the sum is 32.

The square root of 67990001 is about 8245.6049505176. The cubic root of 67990001 is about 408.1455030986.

Adding to 67990001 its reverse (10009976), we get a palindrome (77999977).

The spelling of 67990001 in words is "sixty-seven million, nine hundred ninety thousand, one".