65742761 has 6 divisors (see below), whose sum is σ = 76476330. Its totient is φ = 56350896.

The previous prime is 65742683. The next prime is 65742767. The reversal of 65742761 is 16724756.

It can be written as a sum of positive squares in only one way, i.e., 55056400 + 10686361 = 7420^2 + 3269^2 .

It is a de Polignac number, because none of the positive numbers 2^k-65742761 is a prime.

It is a super-2 number, since 2×65742761² = 8644221247806242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (65742767) 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, 670796 + ... + 670893.

It is an arithmetic number, because the mean of its divisors is an integer number (12746055).

Almost surely, 2^65742761 is an apocalyptic number.

It is an amenable number.

65742761 is a deficient number, since it is larger than the sum of its proper divisors (10733569).

65742761 is a wasteful number, since it uses less digits than its factorization.

65742761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1341703 (or 1341696 counting only the distinct ones).

The product of its digits is 70560, while the sum is 38.

The square root of 65742761 is about 8108.1909819639. The cubic root of 65742761 is about 403.5982858691.

The spelling of 65742761 in words is "sixty-five million, seven hundred forty-two thousand, seven hundred sixty-one".