67730039 has 4 divisors (see below), whose sum is σ = 72940056. Its totient is φ = 62520024.

The previous prime is 67730027. The next prime is 67730063. The reversal of 67730039 is 93003776.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67730039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 67729990 and 67730008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67730639) 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, 2604989 + ... + 2605014.

It is an arithmetic number, because the mean of its divisors is an integer number (18235014).

Almost surely, 2^67730039 is an apocalyptic number.

67730039 is a deficient number, since it is larger than the sum of its proper divisors (5210017).

67730039 is a wasteful number, since it uses less digits than its factorization.

67730039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5210016.

The product of its (nonzero) digits is 23814, while the sum is 35.

The square root of 67730039 is about 8229.8261828547. The cubic root of 67730039 is about 407.6246527958.

The spelling of 67730039 in words is "sixty-seven million, seven hundred thirty thousand, thirty-nine".