68152761 has 6 divisors (see below), whose sum is σ = 98442890. Its totient is φ = 45435168.

The previous prime is 68152759. The next prime is 68152769. The reversal of 68152761 is 16725186.

It can be written as a sum of positive squares in only one way, i.e., 67963536 + 189225 = 8244^2 + 435^2 .

It is not a de Polignac number, because 68152761 - 2¹ = 68152759 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (68152769) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3786256 + ... + 3786273.

Almost surely, 2^68152761 is an apocalyptic number.

It is an amenable number.

68152761 is a deficient number, since it is larger than the sum of its proper divisors (30290129).

68152761 is a wasteful number, since it uses less digits than its factorization.

68152761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7572535 (or 7572532 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 68152761 is about 8255.4685512090. The cubic root of 68152761 is about 408.4709275393.

The spelling of 68152761 in words is "sixty-eight million, one hundred fifty-two thousand, seven hundred sixty-one".