67648404 has 12 divisors (see below), whose sum is σ = 157846304. Its totient is φ = 22549464.

The previous prime is 67648393. The next prime is 67648429. The reversal of 67648404 is 40484676.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2818672 + ... + 2818695.

Almost surely, 2^67648404 is an apocalyptic number.

It is an amenable number.

67648404 is an abundant number, since it is smaller than the sum of its proper divisors (90197900).

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

67648404 is a wasteful number, since it uses less digits than its factorization.

67648404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5637374 (or 5637372 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 39.

The square root of 67648404 is about 8224.8649836943. The cubic root of 67648404 is about 407.4608169885.

The spelling of 67648404 in words is "sixty-seven million, six hundred forty-eight thousand, four hundred four".