67469921 has 8 divisors (see below), whose sum is σ = 70583400. Its totient is φ = 64408960.

The previous prime is 67469911. The next prime is 67469929. The reversal of 67469921 is 12996476.

It can be written as a sum of positive squares in 4 ways, for example, as 7639696 + 59830225 = 2764^2 + 7735^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 67469921 - 2¹⁴ = 67453537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67469929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10490 + ... + 15651.

It is an arithmetic number, because the mean of its divisors is an integer number (8822925).

Almost surely, 2^67469921 is an apocalyptic number.

It is an amenable number.

67469921 is a deficient number, since it is larger than the sum of its proper divisors (3113479).

67469921 is a wasteful number, since it uses less digits than its factorization.

67469921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26259.

The product of its digits is 163296, while the sum is 44.

The square root of 67469921 is about 8214.0076089568. The cubic root of 67469921 is about 407.1021542684.

The spelling of 67469921 in words is "sixty-seven million, four hundred sixty-nine thousand, nine hundred twenty-one".