65662473 has 4 divisors (see below), whose sum is σ = 87549968. Its totient is φ = 43774980.

The previous prime is 65662459. The next prime is 65662477. The reversal of 65662473 is 37426656.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 65662473 - 2¹⁴ = 65646089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65662477) 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, 10943743 + ... + 10943748.

It is an arithmetic number, because the mean of its divisors is an integer number (21887492).

Almost surely, 2^65662473 is an apocalyptic number.

It is an amenable number.

65662473 is a deficient number, since it is larger than the sum of its proper divisors (21887495).

65662473 is a wasteful number, since it uses less digits than its factorization.

65662473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21887494.

The product of its digits is 181440, while the sum is 39.

The square root of 65662473 is about 8103.2384267032. The cubic root of 65662473 is about 403.4339215155.

The spelling of 65662473 in words is "sixty-five million, six hundred sixty-two thousand, four hundred seventy-three".