61560647 has 4 divisors (see below), whose sum is σ = 62870496. Its totient is φ = 60250800.

The previous prime is 61560599. The next prime is 61560701. The reversal of 61560647 is 74606516.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61560647 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 (61560547) 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, 654854 + ... + 654947.

It is an arithmetic number, because the mean of its divisors is an integer number (15717624).

Almost surely, 2^61560647 is an apocalyptic number.

61560647 is a deficient number, since it is larger than the sum of its proper divisors (1309849).

61560647 is a wasteful number, since it uses less digits than its factorization.

61560647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1309848.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 61560647 is about 7846.0593293704. The cubic root of 61560647 is about 394.8520452125.

The spelling of 61560647 in words is "sixty-one million, five hundred sixty thousand, six hundred forty-seven".