67028137 has 4 divisors (see below), whose sum is σ = 73121616. Its totient is φ = 60934660.

The previous prime is 67028131. The next prime is 67028191. The reversal of 67028137 is 73182076.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 67028137 - 2⁷ = 67028009 is a prime.

It is a super-2 number, since 2×67028137² = 8985542299381538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67028131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3046723 + ... + 3046744.

It is an arithmetic number, because the mean of its divisors is an integer number (18280404).

Almost surely, 2^67028137 is an apocalyptic number.

It is an amenable number.

67028137 is a deficient number, since it is larger than the sum of its proper divisors (6093479).

67028137 is a wasteful number, since it uses less digits than its factorization.

67028137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6093478.

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 67028137 is about 8187.0713322897. The cubic root of 67028137 is about 406.2116576989.

The spelling of 67028137 in words is "sixty-seven million, twenty-eight thousand, one hundred thirty-seven".