67746145 has 8 divisors (see below), whose sum is σ = 83278440. Its totient is φ = 52874880.

The previous prime is 67746131. The next prime is 67746169. The reversal of 67746145 is 54164776.

It can be written as a sum of positive squares in 4 ways, for example, as 2572816 + 65173329 = 1604^2 + 8073^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 67746145 - 2¹¹ = 67744097 is a prime.

It is a super-2 number, since 2×67746145² = 9179080324722050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 67746098 and 67746107.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 165030 + ... + 165439.

It is an arithmetic number, because the mean of its divisors is an integer number (10409805).

Almost surely, 2^67746145 is an apocalyptic number.

It is an amenable number.

67746145 is a deficient number, since it is larger than the sum of its proper divisors (15532295).

67746145 is a wasteful number, since it uses less digits than its factorization.

67746145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330515.

The product of its digits is 141120, while the sum is 40.

The square root of 67746145 is about 8230.8046386729. The cubic root of 67746145 is about 407.6569608747.

The spelling of 67746145 in words is "sixty-seven million, seven hundred forty-six thousand, one hundred forty-five".