61470245 has 4 divisors (see below), whose sum is σ = 73764300. Its totient is φ = 49176192.

The previous prime is 61470229. The next prime is 61470257. The reversal of 61470245 is 54207416.

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 33189121 + 28281124 = 5761^2 + 5318^2 .

It is a cyclic number.

It is not a de Polignac number, because 61470245 - 2⁴ = 61470229 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6147020 + ... + 6147029.

It is an arithmetic number, because the mean of its divisors is an integer number (18441075).

Almost surely, 2^61470245 is an apocalyptic number.

It is an amenable number.

61470245 is a deficient number, since it is larger than the sum of its proper divisors (12294055).

61470245 is a wasteful number, since it uses less digits than its factorization.

61470245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12294054.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 61470245 is about 7840.2962316484. The cubic root of 61470245 is about 394.6586700422.

The spelling of 61470245 in words is "sixty-one million, four hundred seventy thousand, two hundred forty-five".