67404253 has 6 divisors (see below), whose sum is σ = 78409086. Its totient is φ = 57775032.

The previous prime is 67404247. The next prime is 67404277. The reversal of 67404253 is 35240476.

It can be written as a sum of positive squares in only one way, i.e., 67190809 + 213444 = 8197^2 + 462^2 .

It is not a de Polignac number, because 67404253 - 2⁵ = 67404221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67407253) 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, 687750 + ... + 687847.

It is an arithmetic number, because the mean of its divisors is an integer number (13068181).

Almost surely, 2^67404253 is an apocalyptic number.

It is an amenable number.

67404253 is a deficient number, since it is larger than the sum of its proper divisors (11004833).

67404253 is a wasteful number, since it uses less digits than its factorization.

67404253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1375611 (or 1375604 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 31.

The square root of 67404253 is about 8210.0093178997. The cubic root of 67404253 is about 406.9700348401.

The spelling of 67404253 in words is "sixty-seven million, four hundred four thousand, two hundred fifty-three".