65406761 has 8 divisors (see below), whose sum is σ = 74808960. Its totient is φ = 56019168.

The previous prime is 65406749. The next prime is 65406763. The reversal of 65406761 is 16760456.

65406761 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 65406761 - 2⁶ = 65406697 is a prime.

It is a super-2 number, since 2×65406761² = 8556088769022242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65406763) 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 7 ways as a sum of consecutive naturals, for example, 8780 + ... + 14418.

It is an arithmetic number, because the mean of its divisors is an integer number (9351120).

Almost surely, 2^65406761 is an apocalyptic number.

It is an amenable number.

65406761 is a deficient number, since it is larger than the sum of its proper divisors (9402199).

65406761 is a wasteful number, since it uses less digits than its factorization.

65406761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7303.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 65406761 is about 8087.4446520517. Note that the first 3 decimals coincide. The cubic root of 65406761 is about 402.9095372524.

The spelling of 65406761 in words is "sixty-five million, four hundred six thousand, seven hundred sixty-one".