67440452 has 18 divisors (see below), whose sum is σ = 118969578. Its totient is φ = 33450688.

The previous prime is 67440431. The next prime is 67440467. The reversal of 67440452 is 25404476.

It can be written as a sum of positive squares in 3 ways, for example, as 5597956 + 61842496 = 2366^2 + 7864^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 250574 + ... + 250842.

It is an arithmetic number, because the mean of its divisors is an integer number (6609421).

Almost surely, 2^67440452 is an apocalyptic number.

It is an amenable number.

67440452 is a deficient number, since it is larger than the sum of its proper divisors (51529126).

67440452 is a wasteful number, since it uses less digits than its factorization.

67440452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 775 (or 504 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 32.

The square root of 67440452 is about 8212.2135870909. The cubic root of 67440452 is about 407.0428753074.

The spelling of 67440452 in words is "sixty-seven million, four hundred forty thousand, four hundred fifty-two".