67539901 has 12 divisors (see below), whose sum is σ = 79950556. Its totient is φ = 56675520.

The previous prime is 67539887. The next prime is 67539919. The reversal of 67539901 is 10993576.

It can be written as a sum of positive squares in 2 ways, for example, as 3059001 + 64480900 = 1749^2 + 8030^2 .

It is not a de Polignac number, because 67539901 - 2²¹ = 65442749 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 (67539001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19896 + ... + 23041.

Almost surely, 2^67539901 is an apocalyptic number.

It is an amenable number.

67539901 is a deficient number, since it is larger than the sum of its proper divisors (12410655).

67539901 is a wasteful number, since it uses less digits than its factorization.

67539901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42972 (or 42961 counting only the distinct ones).

The product of its (nonzero) digits is 51030, while the sum is 40.

The square root of 67539901 is about 8218.2663013558. The cubic root of 67539901 is about 407.2428548175.

The spelling of 67539901 in words is "sixty-seven million, five hundred thirty-nine thousand, nine hundred one".