67770990 has 96 divisors (see below), whose sum is σ = 203636160. Its totient is φ = 15316992.

The previous prime is 67770971. The next prime is 67771001. The reversal of 67770990 is 9907776.

It is a super-3 number, since 3×67770990³ (a number of 24 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

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 47 ways as a sum of consecutive naturals, for example, 60556 + ... + 61664.

It is an arithmetic number, because the mean of its divisors is an integer number (2121210).

Almost surely, 2^67770990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67770990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101818080).

67770990 is an abundant number, since it is smaller than the sum of its proper divisors (135865170).

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

67770990 is a wasteful number, since it uses less digits than its factorization.

67770990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1226 (or 1223 counting only the distinct ones).

The product of its (nonzero) digits is 166698, while the sum is 45.

The square root of 67770990 is about 8232.3137695304. The cubic root of 67770990 is about 407.7067890448.

The spelling of 67770990 in words is "sixty-seven million, seven hundred seventy thousand, nine hundred ninety".