65676505 has 4 divisors (see below), whose sum is σ = 78811812. Its totient is φ = 52541200.

The previous prime is 65676497. The next prime is 65676511. The reversal of 65676505 is 50567656.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 46131264 + 19545241 = 6792^2 + 4421^2 .

It is not a de Polignac number, because 65676505 - 2³ = 65676497 is a prime.

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

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6567646 + ... + 6567655.

It is an arithmetic number, because the mean of its divisors is an integer number (19702953).

Almost surely, 2^65676505 is an apocalyptic number.

It is an amenable number.

65676505 is a deficient number, since it is larger than the sum of its proper divisors (13135307).

65676505 is a wasteful number, since it uses less digits than its factorization.

65676505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13135306.

The product of its (nonzero) digits is 189000, while the sum is 40.

The square root of 65676505 is about 8104.1042071286. The cubic root of 65676505 is about 403.4626572674.

The spelling of 65676505 in words is "sixty-five million, six hundred seventy-six thousand, five hundred five".