67240001 has 4 divisors (see below), whose sum is σ = 67266900. Its totient is φ = 67213104.

The previous prime is 67239967. The next prime is 67240007. The reversal of 67240001 is 10004276.

It is a Cunningham number, because it is equal to 8200²+1.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 42250000 + 24990001 = 6500^2 + 4999^2 .

It is a cyclic number.

It is not a de Polignac number, because 67240001 - 2⁶ = 67239937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67240007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9266 + ... + 14843.

It is an arithmetic number, because the mean of its divisors is an integer number (16816725).

Almost surely, 2^67240001 is an apocalyptic number.

It is an amenable number.

67240001 is a deficient number, since it is larger than the sum of its proper divisors (26899).

67240001 is a wasteful number, since it uses less digits than its factorization.

67240001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26898.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 67240001 is about 8200.0000609756. Note that the first 4 decimals coincide. The cubic root of 67240001 is about 406.6391951194.

Adding to 67240001 its reverse (10004276), we get a palindrome (77244277).

The spelling of 67240001 in words is "sixty-seven million, two hundred forty thousand, one".