67521041 has 16 divisors (see below), whose sum is σ = 83429760. Its totient is φ = 53343360.

The previous prime is 67521037. The next prime is 67521049. The reversal of 67521041 is 14012576.

It is not a de Polignac number, because 67521041 - 2² = 67521037 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 67521041.

It is not an unprimeable number, because it can be changed into a prime (67521049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1940 + ... + 11781.

It is an arithmetic number, because the mean of its divisors is an integer number (5214360).

Almost surely, 2^67521041 is an apocalyptic number.

It is an amenable number.

67521041 is a deficient number, since it is larger than the sum of its proper divisors (15908719).

67521041 is a wasteful number, since it uses less digits than its factorization.

67521041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13784.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 67521041 is about 8217.1187772844. The cubic root of 67521041 is about 407.2049448060.

The spelling of 67521041 in words is "sixty-seven million, five hundred twenty-one thousand, forty-one".