61364245 has 4 divisors (see below), whose sum is σ = 73637100. Its totient is φ = 49091392.

The previous prime is 61364239. The next prime is 61364263. The reversal of 61364245 is 54246316.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 31618129 + 29746116 = 5623^2 + 5454^2 .

It is a cyclic number.

It is not a de Polignac number, because 61364245 - 2⁷ = 61364117 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6136420 + ... + 6136429.

It is an arithmetic number, because the mean of its divisors is an integer number (18409275).

Almost surely, 2^61364245 is an apocalyptic number.

It is an amenable number.

61364245 is a deficient number, since it is larger than the sum of its proper divisors (12272855).

61364245 is a wasteful number, since it uses less digits than its factorization.

61364245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12272854.

The product of its digits is 17280, while the sum is 31.

The square root of 61364245 is about 7833.5333662403. The cubic root of 61364245 is about 394.4316882001.

The spelling of 61364245 in words is "sixty-one million, three hundred sixty-four thousand, two hundred forty-five".