67908642 has 24 divisors (see below), whose sum is σ = 144280176. Its totient is φ = 21304128.

The previous prime is 67908619. The next prime is 67908667. The reversal of 67908642 is 24680976.

It is a super-2 number, since 2×67908642² = 9223167316568328, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 67908594 and 67908603.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17848 + ... + 21315.

It is an arithmetic number, because the mean of its divisors is an integer number (6011674).

Almost surely, 2^67908642 is an apocalyptic number.

67908642 is an abundant number, since it is smaller than the sum of its proper divisors (76371534).

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

67908642 is a wasteful number, since it uses less digits than its factorization.

67908642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39202 (or 39185 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 67908642 is about 8240.6699970330. The cubic root of 67908642 is about 407.9826381501.

The spelling of 67908642 in words is "sixty-seven million, nine hundred eight thousand, six hundred forty-two".