67921041 has 4 divisors (see below), whose sum is σ = 90561392. Its totient is φ = 45280692.

The previous prime is 67921039. The next prime is 67921043. The reversal of 67921041 is 14012976.

It is a happy number.

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 an interprime number because it is at equal distance from previous prime (67921039) and next prime (67921043).

It is not a de Polignac number, because 67921041 - 2¹ = 67921039 is a prime.

It is a super-2 number, since 2×67921041² = 9226535621047362, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67921043) 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, 11320171 + ... + 11320176.

It is an arithmetic number, because the mean of its divisors is an integer number (22640348).

Almost surely, 2^67921041 is an apocalyptic number.

It is an amenable number.

67921041 is a deficient number, since it is larger than the sum of its proper divisors (22640351).

67921041 is a wasteful number, since it uses less digits than its factorization.

67921041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22640350.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 67921041 is about 8241.4222680312. The cubic root of 67921041 is about 408.0074669433.

The spelling of 67921041 in words is "sixty-seven million, nine hundred twenty-one thousand, forty-one".