67468021 has 4 divisors (see below), whose sum is σ = 67502700. Its totient is φ = 67433344.

The previous prime is 67467991. The next prime is 67468043. The reversal of 67468021 is 12086476.

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

It can be written as a sum of positive squares in 2 ways, for example, as 26635921 + 40832100 = 5161^2 + 6390^2 .

It is a cyclic number.

It is not a de Polignac number, because 67468021 - 2¹¹ = 67465973 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 (67468091) 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, 14236 + ... + 18373.

It is an arithmetic number, because the mean of its divisors is an integer number (16875675).

Almost surely, 2^67468021 is an apocalyptic number.

It is an amenable number.

67468021 is a deficient number, since it is larger than the sum of its proper divisors (34679).

67468021 is a wasteful number, since it uses less digits than its factorization.

67468021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34678.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 67468021 is about 8213.8919520529. The cubic root of 67468021 is about 407.0983328057.

The spelling of 67468021 in words is "sixty-seven million, four hundred sixty-eight thousand, twenty-one".