68800761 has 6 divisors (see below), whose sum is σ = 99378890. Its totient is φ = 45867168.

The previous prime is 68800757. The next prime is 68800769. The reversal of 68800761 is 16700886.

It can be written as a sum of positive squares in only one way, i.e., 67963536 + 837225 = 8244^2 + 915^2 .

It is not a de Polignac number, because 68800761 - 2² = 68800757 is a prime.

It is a super-3 number, since 3×68800761³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (68800769) 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 5 ways as a sum of consecutive naturals, for example, 3822256 + ... + 3822273.

Almost surely, 2^68800761 is an apocalyptic number.

It is an amenable number.

68800761 is a deficient number, since it is larger than the sum of its proper divisors (30578129).

68800761 is a wasteful number, since it uses less digits than its factorization.

68800761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7644535 (or 7644532 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 68800761 is about 8294.6224145527. The cubic root of 68800761 is about 409.7614336893.

The spelling of 68800761 in words is "sixty-eight million, eight hundred thousand, seven hundred sixty-one".