67287906 has 48 divisors (see below), whose sum is σ = 167541504. Its totient is φ = 19118592.

The previous prime is 67287901. The next prime is 67287919. The reversal of 67287906 is 60978276.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (67287901) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 22935 + ... + 25701.

It is an arithmetic number, because the mean of its divisors is an integer number (3490448).

Almost surely, 2^67287906 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67287906, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83770752).

67287906 is an abundant number, since it is smaller than the sum of its proper divisors (100253598).

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

67287906 is a wasteful number, since it uses less digits than its factorization.

67287906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2975 (or 2972 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 67287906 is about 8202.9205774529. The cubic root of 67287906 is about 406.7357419467.

The spelling of 67287906 in words is "sixty-seven million, two hundred eighty-seven thousand, nine hundred six".