67661448 has 32 divisors (see below), whose sum is σ = 169646400. Its totient is φ = 22488128.

The previous prime is 67661441. The next prime is 67661453. The reversal of 67661448 is 84416676.

It is not an unprimeable number, because it can be changed into a prime (67661441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4690 + ... + 12542.

It is an arithmetic number, because the mean of its divisors is an integer number (5301450).

Almost surely, 2^67661448 is an apocalyptic number.

It is an amenable number.

67661448 is an abundant number, since it is smaller than the sum of its proper divisors (101984952).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

67661448 is a wasteful number, since it uses less digits than its factorization.

67661448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8221 (or 8217 counting only the distinct ones).

The product of its digits is 193536, while the sum is 42.

The square root of 67661448 is about 8225.6579068182. The cubic root of 67661448 is about 407.4870042401.

The spelling of 67661448 in words is "sixty-seven million, six hundred sixty-one thousand, four hundred forty-eight".