67911964 has 12 divisors (see below), whose sum is σ = 121610104. Its totient is φ = 33166224.

The previous prime is 67911959. The next prime is 67911989. The reversal of 67911964 is 46911976.

It is a happy number.

It is a super-2 number, since 2×67911964² = 9224069708674592, which contains 22 as substring.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a self number, because there is not a number n which added to its sum of digits gives 67911964.

It is a congruent number.

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, 197247 + ... + 197590.

Almost surely, 2^67911964 is an apocalyptic number.

It is an amenable number.

67911964 is a deficient number, since it is larger than the sum of its proper divisors (53698140).

67911964 is a wasteful number, since it uses less digits than its factorization.

67911964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394884 (or 394882 counting only the distinct ones).

The product of its digits is 81648, while the sum is 43.

The square root of 67911964 is about 8240.8715558489. The cubic root of 67911964 is about 407.9892906967.

The spelling of 67911964 in words is "sixty-seven million, nine hundred eleven thousand, nine hundred sixty-four".