65042665 has 8 divisors (see below), whose sum is σ = 78176448. Its totient is φ = 51950640.

The previous prime is 65042657. The next prime is 65042683. The reversal of 65042665 is 56624056.

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

It is not a de Polignac number, because 65042665 - 2³ = 65042657 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 65042665.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6901 + ... + 13330.

It is an arithmetic number, because the mean of its divisors is an integer number (9772056).

Almost surely, 2^65042665 is an apocalyptic number.

It is an amenable number.

65042665 is a deficient number, since it is larger than the sum of its proper divisors (13133783).

65042665 is a wasteful number, since it uses less digits than its factorization.

65042665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20879.

The product of its (nonzero) digits is 43200, while the sum is 34.

The square root of 65042665 is about 8064.9032852230. The cubic root of 65042665 is about 402.1605280359.

The spelling of 65042665 in words is "sixty-five million, forty-two thousand, six hundred sixty-five".