67950640 has 20 divisors (see below), whose sum is σ = 157985424. Its totient is φ = 27180224.

The previous prime is 67950637. The next prime is 67950661. The reversal of 67950640 is 4605976.

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 67950640.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 424612 + ... + 424771.

Almost surely, 2^67950640 is an apocalyptic number.

It is an amenable number.

67950640 is an abundant number, since it is smaller than the sum of its proper divisors (90034784).

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

67950640 is a wasteful number, since it uses less digits than its factorization.

67950640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 849396 (or 849390 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 67950640 is about 8243.2178183037. The cubic root of 67950640 is about 408.0667262391.

The spelling of 67950640 in words is "sixty-seven million, nine hundred fifty thousand, six hundred forty".