67774434 has 64 divisors (see below), whose sum is σ = 168618240. Its totient is φ = 17683200.

The previous prime is 67774411. The next prime is 67774451. The reversal of 67774434 is 43447776.

It is a Harshad number since it is a multiple of its sum of digits (42).

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 31 ways as a sum of consecutive naturals, for example, 54532 + ... + 55760.

It is an arithmetic number, because the mean of its divisors is an integer number (2634660).

Almost surely, 2^67774434 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67774434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84309120).

67774434 is an abundant number, since it is smaller than the sum of its proper divisors (100843806).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

67774434 is a wasteful number, since it uses less digits than its factorization.

67774434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1355.

The product of its digits is 395136, while the sum is 42.

The square root of 67774434 is about 8232.5229425736. The cubic root of 67774434 is about 407.7136952368.

It can be divided in two parts, 6777 and 4434, that added together give a palindrome (11211).

The spelling of 67774434 in words is "sixty-seven million, seven hundred seventy-four thousand, four hundred thirty-four".