65656545 has 16 divisors (see below), whose sum is σ = 105855552. Its totient is φ = 34748480.

The previous prime is 65656529. The next prime is 65656553. The reversal of 65656545 is 54565656.

65656545 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is not a de Polignac number, because 65656545 - 2⁴ = 65656529 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 65656497 and 65656506.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14742 + ... + 18671.

It is an arithmetic number, because the mean of its divisors is an integer number (6615972).

Almost surely, 2^65656545 is an apocalyptic number.

It is an amenable number.

65656545 is a deficient number, since it is larger than the sum of its proper divisors (40199007).

65656545 is a wasteful number, since it uses less digits than its factorization.

65656545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33552.

The product of its digits is 540000, while the sum is 42.

The square root of 65656545 is about 8102.8726387621. The cubic root of 65656545 is about 403.4217804952.

The spelling of 65656545 in words is "sixty-five million, six hundred fifty-six thousand, five hundred forty-five".