67144401 has 6 divisors (see below), whose sum is σ = 96986370. Its totient is φ = 44762928.

The previous prime is 67144379. The next prime is 67144409. The reversal of 67144401 is 10444176.

It can be written as a sum of positive squares in only one way, i.e., 66438801 + 705600 = 8151^2 + 840^2 .

It is not a de Polignac number, because 67144401 - 2⁹ = 67143889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (67144409) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3730236 + ... + 3730253.

It is an arithmetic number, because the mean of its divisors is an integer number (16164395).

Almost surely, 2^67144401 is an apocalyptic number.

It is an amenable number.

67144401 is a deficient number, since it is larger than the sum of its proper divisors (29841969).

67144401 is a wasteful number, since it uses less digits than its factorization.

67144401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7460495 (or 7460492 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 67144401 is about 8194.1687192784. The cubic root of 67144401 is about 406.4463875410.

Adding to 67144401 its reverse (10444176), we get a palindrome (77588577).

The spelling of 67144401 in words is "sixty-seven million, one hundred forty-four thousand, four hundred one".