61382613 has 4 divisors (see below), whose sum is σ = 81843488. Its totient is φ = 40921740.

The previous prime is 61382603. The next prime is 61382623. The reversal of 61382613 is 31628316.

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 an interprime number because it is at equal distance from previous prime (61382603) and next prime (61382623).

It is not a de Polignac number, because 61382613 - 2¹³ = 61374421 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 (61382603) 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, 10230433 + ... + 10230438.

It is an arithmetic number, because the mean of its divisors is an integer number (20460872).

Almost surely, 2^61382613 is an apocalyptic number.

It is an amenable number.

61382613 is a deficient number, since it is larger than the sum of its proper divisors (20460875).

61382613 is a wasteful number, since it uses less digits than its factorization.

61382613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20460874.

The product of its digits is 5184, while the sum is 30.

The square root of 61382613 is about 7834.7056741144. The cubic root of 61382613 is about 394.4710390115.

The spelling of 61382613 in words is "sixty-one million, three hundred eighty-two thousand, six hundred thirteen".