67420990 has 64 divisors (see below), whose sum is σ = 152925696. Its totient is φ = 20829312.

The previous prime is 67420973. The next prime is 67420999. The reversal of 67420990 is 9902476.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67420999) 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 31 ways as a sum of consecutive naturals, for example, 38269 + ... + 39991.

It is an arithmetic number, because the mean of its divisors is an integer number (2389464).

Almost surely, 2^67420990 is an apocalyptic number.

67420990 is an abundant number, since it is smaller than the sum of its proper divisors (85504706).

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

67420990 is a wasteful number, since it uses less digits than its factorization.

67420990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1793.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 67420990 is about 8211.0285592001. The cubic root of 67420990 is about 407.0037166602.

The spelling of 67420990 in words is "sixty-seven million, four hundred twenty thousand, nine hundred ninety".