65120115 has 32 divisors (see below), whose sum is σ = 110854656. Its totient is φ = 32529920.

The previous prime is 65120089. The next prime is 65120117. The reversal of 65120115 is 51102156.

It is not a de Polignac number, because 65120115 - 2¹² = 65116019 is a prime.

It is a super-2 number, since 2×65120115² = 8481258755226450, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 65120091 and 65120100.

It is not an unprimeable number, because it can be changed into a prime (65120117) 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, 66580 + ... + 67550.

It is an arithmetic number, because the mean of its divisors is an integer number (3464208).

Almost surely, 2^65120115 is an apocalyptic number.

65120115 is a deficient number, since it is larger than the sum of its proper divisors (45734541).

65120115 is a wasteful number, since it uses less digits than its factorization.

65120115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1259.

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 65120115 is about 8069.7035261526. The cubic root of 65120115 is about 402.3200898564.

The spelling of 65120115 in words is "sixty-five million, one hundred twenty thousand, one hundred fifteen".