67400001 has 12 divisors (see below), whose sum is σ = 98010900. Its totient is φ = 44630880.

The previous prime is 67399999. The next prime is 67400009. The reversal of 67400001 is 10000476.

It can be written as a sum of positive squares in 2 ways, for example, as 10246401 + 57153600 = 3201^2 + 7560^2 .

It is not a de Polignac number, because 67400001 - 2¹ = 67399999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (67400009) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23790 + ... + 26471.

It is an arithmetic number, because the mean of its divisors is an integer number (8167575).

Almost surely, 2^67400001 is an apocalyptic number.

It is an amenable number.

67400001 is a deficient number, since it is larger than the sum of its proper divisors (30610899).

67400001 is a wasteful number, since it uses less digits than its factorization.

67400001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50416 (or 50413 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 67400001 is about 8209.7503616127. The cubic root of 67400001 is about 406.9614771557.

Adding to 67400001 its reverse (10000476), we get a palindrome (77400477).

The spelling of 67400001 in words is "sixty-seven million, four hundred thousand, one".