68737775 has 6 divisors (see below), whose sum is σ = 85234872. Its totient is φ = 54990200.

The previous prime is 68737741. The next prime is 68737811. The reversal of 68737775 is 57773786.

It is not a de Polignac number, because 68737775 - 2⁸ = 68737519 is a prime.

It is a super-3 number, since 3×68737775³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1374731 + ... + 1374780.

It is an arithmetic number, because the mean of its divisors is an integer number (14205812).

Almost surely, 2^68737775 is an apocalyptic number.

68737775 is a deficient number, since it is larger than the sum of its proper divisors (16497097).

68737775 is a wasteful number, since it uses less digits than its factorization.

68737775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2749521 (or 2749516 counting only the distinct ones).

The product of its digits is 1728720, while the sum is 50.

The square root of 68737775 is about 8290.8247478764. The cubic root of 68737775 is about 409.6363521578.

The spelling of 68737775 in words is "sixty-eight million, seven hundred thirty-seven thousand, seven hundred seventy-five".