65667741 has 4 divisors (see below), whose sum is σ = 87556992. Its totient is φ = 43778492.

The previous prime is 65667731. The next prime is 65667779. The reversal of 65667741 is 14776656.

65667741 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 65667741 - 2⁹ = 65667229 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 65667693 and 65667702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65667731) 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 3 ways as a sum of consecutive naturals, for example, 10944621 + ... + 10944626.

It is an arithmetic number, because the mean of its divisors is an integer number (21889248).

Almost surely, 2^65667741 is an apocalyptic number.

It is an amenable number.

65667741 is a deficient number, since it is larger than the sum of its proper divisors (21889251).

65667741 is a wasteful number, since it uses less digits than its factorization.

65667741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21889250.

The product of its digits is 211680, while the sum is 42.

The square root of 65667741 is about 8103.5634754101. The cubic root of 65667741 is about 403.4447101896. Note that the first 3 decimals are identical.

The spelling of 65667741 in words is "sixty-five million, six hundred sixty-seven thousand, seven hundred forty-one".