67968506 has 4 divisors (see below), whose sum is σ = 101952762. Its totient is φ = 33984252.

The previous prime is 67968503. The next prime is 67968517. The reversal of 67968506 is 60586976.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 50537881 + 17430625 = 7109^2 + 4175^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (67968503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16992125 + ... + 16992128.

Almost surely, 2^67968506 is an apocalyptic number.

67968506 is a deficient number, since it is larger than the sum of its proper divisors (33984256).

67968506 is a wasteful number, since it uses less digits than its factorization.

67968506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33984255.

The product of its (nonzero) digits is 544320, while the sum is 47.

The square root of 67968506 is about 8244.3014258335. The cubic root of 67968506 is about 408.1024869092.

The spelling of 67968506 in words is "sixty-seven million, nine hundred sixty-eight thousand, five hundred six".