65680474 has 8 divisors (see below), whose sum is σ = 98770068. Its totient is φ = 32757120.

The previous prime is 65680427. The next prime is 65680477. The reversal of 65680474 is 47408656.

It can be written as a sum of positive squares in 2 ways, for example, as 64883025 + 797449 = 8055^2 + 893^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (65680477) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40567 + ... + 42154.

Almost surely, 2^65680474 is an apocalyptic number.

65680474 is a deficient number, since it is larger than the sum of its proper divisors (33089594).

65680474 is a wasteful number, since it uses less digits than its factorization.

65680474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83120.

The product of its (nonzero) digits is 161280, while the sum is 40.

The square root of 65680474 is about 8104.3490793524. The cubic root of 65680474 is about 403.4707845321.

The spelling of 65680474 in words is "sixty-five million, six hundred eighty thousand, four hundred seventy-four".