67456749 has 16 divisors (see below), whose sum is σ = 91316160. Its totient is φ = 44288640.

The previous prime is 67456699. The next prime is 67456751. The reversal of 67456749 is 94765476.

It is not a de Polignac number, because 67456749 - 2¹² = 67452653 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 67456698 and 67456707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67456049) 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 15 ways as a sum of consecutive naturals, for example, 124419 + ... + 124959.

It is an arithmetic number, because the mean of its divisors is an integer number (5707260).

Almost surely, 2^67456749 is an apocalyptic number.

It is an amenable number.

67456749 is a deficient number, since it is larger than the sum of its proper divisors (23859411).

67456749 is a wasteful number, since it uses less digits than its factorization.

67456749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1100.

The product of its digits is 1270080, while the sum is 48.

The square root of 67456749 is about 8213.2057687605. The cubic root of 67456749 is about 407.0756600000.

The spelling of 67456749 in words is "sixty-seven million, four hundred fifty-six thousand, seven hundred forty-nine".