67115401 has 4 divisors (see below), whose sum is σ = 68752404. Its totient is φ = 65478400.

The previous prime is 67115393. The next prime is 67115443. The reversal of 67115401 is 10451176.

It is a happy number.

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 14175225 + 52940176 = 3765^2 + 7276^2 .

It is a cyclic number.

It is not a de Polignac number, because 67115401 - 2³ = 67115393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67115491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 818440 + ... + 818521.

It is an arithmetic number, because the mean of its divisors is an integer number (17188101).

Almost surely, 2^67115401 is an apocalyptic number.

It is an amenable number.

67115401 is a deficient number, since it is larger than the sum of its proper divisors (1637003).

67115401 is a wasteful number, since it uses less digits than its factorization.

67115401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1637002.

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 67115401 is about 8192.3989771007. The cubic root of 67115401 is about 406.3878637107.

Adding to 67115401 its reverse (10451176), we get a palindrome (77566577).

The spelling of 67115401 in words is "sixty-seven million, one hundred fifteen thousand, four hundred one".