67690449 has 12 divisors (see below), whose sum is σ = 102026496. Its totient is φ = 43164792.

The previous prime is 67690423. The next prime is 67690499. The reversal of 67690449 is 94409676.

It is not a de Polignac number, because 67690449 - 2¹⁹ = 67166161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (67690409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 163297 + ... + 163710.

It is an arithmetic number, because the mean of its divisors is an integer number (8502208).

Almost surely, 2^67690449 is an apocalyptic number.

67690449 is a gapful number since it is divisible by the number (69) formed by its first and last digit.

It is an amenable number.

67690449 is a deficient number, since it is larger than the sum of its proper divisors (34336047).

67690449 is a wasteful number, since it uses less digits than its factorization.

67690449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327036 (or 327033 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The square root of 67690449 is about 8227.4205556784. The cubic root of 67690449 is about 407.5452148507.

It can be divided in two parts, 676 and 90449, that added together give a cube (91125 = 45³).

The spelling of 67690449 in words is "sixty-seven million, six hundred ninety thousand, four hundred forty-nine".