65651145 has 32 divisors (see below), whose sum is σ = 120352512. Its totient is φ = 29935872.

The previous prime is 65651123. The next prime is 65651147. The reversal of 65651145 is 54115656.

It is not a de Polignac number, because 65651145 - 2¹¹ = 65649097 is a prime.

It is a super-2 number, since 2×65651145² = 8620145679622050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (65651147) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 76539 + ... + 77391.

It is an arithmetic number, because the mean of its divisors is an integer number (3761016).

Almost surely, 2^65651145 is an apocalyptic number.

It is an amenable number.

65651145 is a deficient number, since it is larger than the sum of its proper divisors (54701367).

65651145 is a wasteful number, since it uses less digits than its factorization.

65651145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1601.

The product of its digits is 18000, while the sum is 33.

The square root of 65651145 is about 8102.5394167508. The cubic root of 65651145 is about 403.4107202252.

The spelling of 65651145 in words is "sixty-five million, six hundred fifty-one thousand, one hundred forty-five".