67855413 has 4 divisors (see below), whose sum is σ = 90473888. Its totient is φ = 45236940.

The previous prime is 67855409. The next prime is 67855421. The reversal of 67855413 is 31455876.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 67855413 - 2² = 67855409 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67855813) 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 3 ways as a sum of consecutive naturals, for example, 11309233 + ... + 11309238.

It is an arithmetic number, because the mean of its divisors is an integer number (22618472).

Almost surely, 2^67855413 is an apocalyptic number.

It is an amenable number.

67855413 is a deficient number, since it is larger than the sum of its proper divisors (22618475).

67855413 is a wasteful number, since it uses less digits than its factorization.

67855413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22618474.

The product of its digits is 100800, while the sum is 39.

The square root of 67855413 is about 8237.4397114638. The cubic root of 67855413 is about 407.8760136042.

The spelling of 67855413 in words is "sixty-seven million, eight hundred fifty-five thousand, four hundred thirteen".