67540757 has 8 divisors (see below), whose sum is σ = 68956896. Its totient is φ = 66136752.

The previous prime is 67540751. The next prime is 67540769. The reversal of 67540757 is 75704576.

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 67540757 - 2¹² = 67536661 is a prime.

It is a super-2 number, since 2×67540757² = 9123507712266098, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67540751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8678 + ... + 14504.

It is an arithmetic number, because the mean of its divisors is an integer number (8619612).

Almost surely, 2^67540757 is an apocalyptic number.

67540757 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

It is an amenable number.

67540757 is a deficient number, since it is larger than the sum of its proper divisors (1416139).

67540757 is a wasteful number, since it uses less digits than its factorization.

67540757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6067.

The product of its (nonzero) digits is 205800, while the sum is 41.

The square root of 67540757 is about 8218.3183803014. The cubic root of 67540757 is about 407.2445752741.

The spelling of 67540757 in words is "sixty-seven million, five hundred forty thousand, seven hundred fifty-seven".