67343643 has 20 divisors (see below), whose sum is σ = 102109480. Its totient is φ = 44222112.

The previous prime is 67343623. The next prime is 67343651. The reversal of 67343643 is 34634376.

67343643 is a `hidden beast` number, since 6 + 7 + 3 + 4 + 3 + 643 = 666.

It is not a de Polignac number, because 67343643 - 2⁵ = 67343611 is a prime.

It is a super-2 number, since 2×67343643² = 9070332505022898, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 67343598 and 67343607.

It is not an unprimeable number, because it can be changed into a prime (67343623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 778 + ... + 11631.

It is an arithmetic number, because the mean of its divisors is an integer number (5105474).

Almost surely, 2^67343643 is an apocalyptic number.

67343643 is a deficient number, since it is larger than the sum of its proper divisors (34765837).

67343643 is a wasteful number, since it uses less digits than its factorization.

67343643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12488 (or 12479 counting only the distinct ones).

The product of its digits is 108864, while the sum is 36.

The square root of 67343643 is about 8206.3172617198. The cubic root of 67343643 is about 406.8480155818.

The spelling of 67343643 in words is "sixty-seven million, three hundred forty-three thousand, six hundred forty-three".