67908136 has 16 divisors (see below), whose sum is σ = 130433940. Its totient is φ = 33125760.

The previous prime is 67908131. The next prime is 67908161. The reversal of 67908136 is 63180976.

It can be written as a sum of positive squares in 2 ways, for example, as 43956900 + 23951236 = 6630^2 + 4894^2 .

It is a super-2 number, since 2×67908136² = 9223029869988992, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (67908131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103191 + ... + 103846.

Almost surely, 2^67908136 is an apocalyptic number.

It is an amenable number.

67908136 is a deficient number, since it is larger than the sum of its proper divisors (62525804).

67908136 is a wasteful number, since it uses less digits than its factorization.

67908136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207084 (or 207080 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 67908136 is about 8240.6392955887. The cubic root of 67908136 is about 407.9816248292.

The spelling of 67908136 in words is "sixty-seven million, nine hundred eight thousand, one hundred thirty-six".