67776673 has 8 divisors (see below), whose sum is σ = 69359400. Its totient is φ = 66209280.

The previous prime is 67776641. The next prime is 67776677. The reversal of 67776673 is 37667776.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3504384 + 64272289 = 1872^2 + 8017^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 67776673 - 2⁵ = 67776641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67776677) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5361 + ... + 12817.

It is an arithmetic number, because the mean of its divisors is an integer number (8669925).

Almost surely, 2^67776673 is an apocalyptic number.

It is an amenable number.

67776673 is a deficient number, since it is larger than the sum of its proper divisors (1582727).

67776673 is a wasteful number, since it uses less digits than its factorization.

67776673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7667.

The product of its digits is 1555848, while the sum is 49.

The square root of 67776673 is about 8232.6589264951. The cubic root of 67776673 is about 407.7181849382.

The spelling of 67776673 in words is "sixty-seven million, seven hundred seventy-six thousand, six hundred seventy-three".