65148081 has 16 divisors (see below), whose sum is σ = 89886720. Its totient is φ = 41927760.

The previous prime is 65148073. The next prime is 65148091. The reversal of 65148081 is 18084156.

It is not a de Polignac number, because 65148081 - 2³ = 65148073 is a prime.

It is a super-2 number, since 2×65148081² = 8488544915965122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (65148071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60756 + ... + 61818.

It is an arithmetic number, because the mean of its divisors is an integer number (5617920).

Almost surely, 2^65148081 is an apocalyptic number.

It is an amenable number.

65148081 is a deficient number, since it is larger than the sum of its proper divisors (24738639).

65148081 is a wasteful number, since it uses less digits than its factorization.

65148081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1756.

The product of its (nonzero) digits is 7680, while the sum is 33.

The square root of 65148081 is about 8071.4361175692. The cubic root of 65148081 is about 402.3776740779.

The spelling of 65148081 in words is "sixty-five million, one hundred forty-eight thousand, eighty-one".