67108820 has 24 divisors (see below), whose sum is σ = 142629984. Its totient is φ = 26519456.

The previous prime is 67108819. The next prime is 67108837. The reversal of 67108820 is 2880176.

It is a nialpdrome in base 4.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18554 + ... + 21873.

It is an arithmetic number, because the mean of its divisors is an integer number (5942916).

Almost surely, 2^67108820 is an apocalyptic number.

It is an amenable number.

67108820 is an abundant number, since it is smaller than the sum of its proper divisors (75521164).

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

67108820 is a wasteful number, since it uses less digits than its factorization.

67108820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40519 (or 40517 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 67108820 is about 8191.9973144527. The cubic root of 67108820 is about 406.3745804905.

Adding to 67108820 its reverse (2880176), we get a palindrome (69988996).

The spelling of 67108820 in words is "sixty-seven million, one hundred eight thousand, eight hundred twenty".