67928506 has 4 divisors (see below), whose sum is σ = 101892762. Its totient is φ = 33964252.

The previous prime is 67928503. The next prime is 67928507. The reversal of 67928506 is 60582976.

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., 40208281 + 27720225 = 6341^2 + 5265^2 .

It is a super-2 number, since 2×67928506² = 9228563854784072, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (67928503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16982125 + ... + 16982128.

Almost surely, 2^67928506 is an apocalyptic number.

67928506 is a deficient number, since it is larger than the sum of its proper divisors (33964256).

67928506 is a wasteful number, since it uses less digits than its factorization.

67928506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33964255.

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 67928506 is about 8241.8751507166. The cubic root of 67928506 is about 408.0224140256.

The spelling of 67928506 in words is "sixty-seven million, nine hundred twenty-eight thousand, five hundred six".