61799445 has 12 divisors (see below), whose sum is σ = 107119116. Its totient is φ = 32959680.

The previous prime is 61799443. The next prime is 61799447. The reversal of 61799445 is 54499716.

It is an interprime number because it is at equal distance from previous prime (61799443) and next prime (61799447).

It can be written as a sum of positive squares in 2 ways, for example, as 17363889 + 44435556 = 4167^2 + 6666^2 .

It is not a de Polignac number, because 61799445 - 2¹ = 61799443 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 1373321 = 61799445 / (6 + 1 + 7 + 9 + 9 + 4 + 4 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 61799445.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61799443) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 686616 + ... + 686705.

It is an arithmetic number, because the mean of its divisors is an integer number (8926593).

Almost surely, 2^61799445 is an apocalyptic number.

It is an amenable number.

61799445 is a deficient number, since it is larger than the sum of its proper divisors (45319671).

61799445 is a wasteful number, since it uses less digits than its factorization.

61799445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1373332 (or 1373329 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 61799445 is about 7861.2623032182. The cubic root of 61799445 is about 395.3619392566.

The spelling of 61799445 in words is "sixty-one million, seven hundred ninety-nine thousand, four hundred forty-five".