67082021 has 4 divisors (see below), whose sum is σ = 68642112. Its totient is φ = 65521932.

The previous prime is 67082003. The next prime is 67082023. The reversal of 67082021 is 12028076.

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 67082021 - 2⁶ = 67081957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67082023) 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, 779981 + ... + 780066.

It is an arithmetic number, because the mean of its divisors is an integer number (17160528).

Almost surely, 2^67082021 is an apocalyptic number.

It is an amenable number.

67082021 is a deficient number, since it is larger than the sum of its proper divisors (1560091).

67082021 is a wasteful number, since it uses less digits than its factorization.

67082021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1560090.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 67082021 is about 8190.3614694347. The cubic root of 67082021 is about 406.3204798902.

The spelling of 67082021 in words is "sixty-seven million, eighty-two thousand, twenty-one".