67400417 has 16 divisors (see below), whose sum is σ = 80154624. Its totient is φ = 55458000.

The previous prime is 67400413. The next prime is 67400423. The reversal of 67400417 is 71400476.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 67400417 - 2² = 67400413 is a prime.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 67400417.

It is not an unprimeable number, because it can be changed into a prime (67400413) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27242 + ... + 29612.

It is an arithmetic number, because the mean of its divisors is an integer number (5009664).

Almost surely, 2^67400417 is an apocalyptic number.

It is an amenable number.

67400417 is a deficient number, since it is larger than the sum of its proper divisors (12754207).

67400417 is a wasteful number, since it uses less digits than its factorization.

67400417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2540.

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 67400417 is about 8209.7756973014. The cubic root of 67400417 is about 406.9623144238.

The spelling of 67400417 in words is "sixty-seven million, four hundred thousand, four hundred seventeen".