67542920 has 16 divisors (see below), whose sum is σ = 151971660. Its totient is φ = 27017152.

The previous prime is 67542911. The next prime is 67542947. The reversal of 67542920 is 2924576.

It can be written as a sum of positive squares in 2 ways, for example, as 67535524 + 7396 = 8218^2 + 86^2 .

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 3 ways as a sum of consecutive naturals, for example, 844247 + ... + 844326.

Almost surely, 2^67542920 is an apocalyptic number.

It is an amenable number.

67542920 is an abundant number, since it is smaller than the sum of its proper divisors (84428740).

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

67542920 is a wasteful number, since it uses less digits than its factorization.

67542920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1688584 (or 1688580 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 67542920 is about 8218.4499755124. The cubic root of 67542920 is about 407.2489225781.

The spelling of 67542920 in words is "sixty-seven million, five hundred forty-two thousand, nine hundred twenty".