65929081 has 4 divisors (see below), whose sum is σ = 66067200. Its totient is φ = 65790964.

The previous prime is 65929067. The next prime is 65929091. The reversal of 65929081 is 18092956.

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 65929081 - 2⁵ = 65929049 is a prime.

It is a super-2 number, since 2×65929081² = 8693287443009122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65929051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68341 + ... + 69298.

It is an arithmetic number, because the mean of its divisors is an integer number (16516800).

Almost surely, 2^65929081 is an apocalyptic number.

It is an amenable number.

65929081 is a deficient number, since it is larger than the sum of its proper divisors (138119).

65929081 is a wasteful number, since it uses less digits than its factorization.

65929081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138118.

The product of its (nonzero) digits is 38880, while the sum is 40.

The square root of 65929081 is about 8119.6724687637. The cubic root of 65929081 is about 403.9792023571.

The spelling of 65929081 in words is "sixty-five million, nine hundred twenty-nine thousand, eighty-one".