67423905 has 12 divisors (see below), whose sum is σ = 116868180. Its totient is φ = 35959392.

The previous prime is 67423877. The next prime is 67423907. The reversal of 67423905 is 50932476.

It can be written as a sum of positive squares in 2 ways, for example, as 11128896 + 56295009 = 3336^2 + 7503^2 .

It is not a de Polignac number, because 67423905 - 2¹¹ = 67421857 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 67423905.

It is not an unprimeable number, because it can be changed into a prime (67423907) 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, 749110 + ... + 749199.

It is an arithmetic number, because the mean of its divisors is an integer number (9739015).

Almost surely, 2^67423905 is an apocalyptic number.

It is an amenable number.

67423905 is a deficient number, since it is larger than the sum of its proper divisors (49444275).

67423905 is a wasteful number, since it uses less digits than its factorization.

67423905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1498320 (or 1498317 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 67423905 is about 8211.2060624490. The cubic root of 67423905 is about 407.0095822852.

The spelling of 67423905 in words is "sixty-seven million, four hundred twenty-three thousand, nine hundred five".