42613665 has 8 divisors (see below), whose sum is σ = 68181888. Its totient is φ = 22727280.

The previous prime is 42613651. The next prime is 42613667. The reversal of 42613665 is 56631624.

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

It is not a de Polignac number, because 42613665 - 2⁵ = 42613633 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (42613667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1420441 + ... + 1420470.

It is an arithmetic number, because the mean of its divisors is an integer number (8522736).

Almost surely, 2^42613665 is an apocalyptic number.

It is an amenable number.

42613665 is a deficient number, since it is larger than the sum of its proper divisors (25568223).

42613665 is a wasteful number, since it uses less digits than its factorization.

42613665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2840919.

The product of its digits is 25920, while the sum is 33.

The square root of 42613665 is about 6527.9142917168. The cubic root of 42613665 is about 349.2874346256.

The spelling of 42613665 in words is "forty-two million, six hundred thirteen thousand, six hundred sixty-five".