445642613 has 8 divisors (see below), whose sum is σ = 480129048. Its totient is φ = 411185664.

The previous prime is 445642609. The next prime is 445642621. The reversal of 445642613 is 316246544.

It can be written as a sum of positive squares in 4 ways, for example, as 27112849 + 418529764 = 5207^2 + 20458^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 445642613 - 2² = 445642609 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445642633) 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, 31745 + ... + 43577.

It is an arithmetic number, because the mean of its divisors is an integer number (60016131).

Almost surely, 2^445642613 is an apocalyptic number.

It is an amenable number.

445642613 is a deficient number, since it is larger than the sum of its proper divisors (34486435).

445642613 is a wasteful number, since it uses less digits than its factorization.

445642613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14743.

The product of its digits is 69120, while the sum is 35.

The square root of 445642613 is about 21110.2490037422. The cubic root of 445642613 is about 763.8279933352.

The spelling of 445642613 in words is "four hundred forty-five million, six hundred forty-two thousand, six hundred thirteen".