67426590 has 192 divisors, whose sum is σ = 216442368. Its totient is φ = 13056000.

The previous prime is 67426571. The next prime is 67426603. The reversal of 67426590 is 9562476.

It is a congruent number.

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 95 ways as a sum of consecutive naturals, for example, 667540 + ... + 667640.

It is an arithmetic number, because the mean of its divisors is an integer number (1127304).

Almost surely, 2^67426590 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67426590, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108221184).

67426590 is an abundant number, since it is smaller than the sum of its proper divisors (149015778).

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

67426590 is a wasteful number, since it uses less digits than its factorization.

67426590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163 (or 146 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 67426590 is about 8211.3695569010. The cubic root of 67426590 is about 407.0149849497.

The spelling of 67426590 in words is "sixty-seven million, four hundred twenty-six thousand, five hundred ninety".