67542687 has 16 divisors (see below), whose sum is σ = 100226560. Its totient is φ = 44955000.

The previous prime is 67542647. The next prime is 67542721. The reversal of 67542687 is 78624576.

It is not a de Polignac number, because 67542687 - 2⁶ = 67542623 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 (67542647) 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, 18612 + ... + 21942.

It is an arithmetic number, because the mean of its divisors is an integer number (6264160).

Almost surely, 2^67542687 is an apocalyptic number.

67542687 is a deficient number, since it is larger than the sum of its proper divisors (32683873).

67542687 is a wasteful number, since it uses less digits than its factorization.

67542687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4091 (or 4085 counting only the distinct ones).

The product of its digits is 564480, while the sum is 45.

The square root of 67542687 is about 8218.4358000778. The cubic root of 67542687 is about 407.2484542877.

The spelling of 67542687 in words is "sixty-seven million, five hundred forty-two thousand, six hundred eighty-seven".