67889745 has 120 divisors (see below), whose sum is σ = 154934208. Its totient is φ = 28123200.

The previous prime is 67889743. The next prime is 67889749. The reversal of 67889745 is 54798876.

It is not a de Polignac number, because 67889745 - 2¹ = 67889743 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 67889691 and 67889700.

It is not an unprimeable number, because it can be changed into a prime (67889741) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 218140 + ... + 218450.

Almost surely, 2^67889745 is an apocalyptic number.

It is an amenable number.

67889745 is an abundant number, since it is smaller than the sum of its proper divisors (87044463).

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

67889745 is a wasteful number, since it uses less digits than its factorization.

67889745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353 (or 337 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 54.

The square root of 67889745 is about 8239.5233478642. The cubic root of 67889745 is about 407.9447914052.

The spelling of 67889745 in words is "sixty-seven million, eight hundred eighty-nine thousand, seven hundred forty-five".