67779223 has 8 divisors (see below), whose sum is σ = 69555200. Its totient is φ = 66012408.

The previous prime is 67779197. The next prime is 67779233. The reversal of 67779223 is 32297776.

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 67779223 - 2¹³ = 67771031 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 67779223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67779233) 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, 14218 + ... + 18376.

It is an arithmetic number, because the mean of its divisors is an integer number (8694400).

Almost surely, 2^67779223 is an apocalyptic number.

67779223 is a deficient number, since it is larger than the sum of its proper divisors (1775977).

67779223 is a wasteful number, since it uses less digits than its factorization.

67779223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4581.

The product of its digits is 222264, while the sum is 43.

The square root of 67779223 is about 8232.8137960238. The cubic root of 67779223 is about 407.7232981444.

The spelling of 67779223 in words is "sixty-seven million, seven hundred seventy-nine thousand, two hundred twenty-three".