67606403 has 4 divisors (see below), whose sum is σ = 68092920. Its totient is φ = 67119888.

The previous prime is 67606397. The next prime is 67606411. The reversal of 67606403 is 30460676.

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

It is a cyclic number.

It is not a de Polignac number, because 67606403 - 2⁴ = 67606387 is a prime.

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 67606403.

It is not an unprimeable number, because it can be changed into a prime (67606003) 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, 243050 + ... + 243327.

It is an arithmetic number, because the mean of its divisors is an integer number (17023230).

Almost surely, 2^67606403 is an apocalyptic number.

67606403 is a deficient number, since it is larger than the sum of its proper divisors (486517).

67606403 is a wasteful number, since it uses less digits than its factorization.

67606403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486516.

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 67606403 is about 8222.3112930611. The cubic root of 67606403 is about 407.3764725261.

The spelling of 67606403 in words is "sixty-seven million, six hundred six thousand, four hundred three".