61606747 has 4 divisors (see below), whose sum is σ = 61622496. Its totient is φ = 61591000.

The previous prime is 61606733. The next prime is 61606751. The reversal of 61606747 is 74760616.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 61606747 - 2¹⁹ = 61082459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61606717) 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, 2997 + ... + 11497.

It is an arithmetic number, because the mean of its divisors is an integer number (15405624).

Almost surely, 2^61606747 is an apocalyptic number.

61606747 is a deficient number, since it is larger than the sum of its proper divisors (15749).

61606747 is an equidigital number, since it uses as much as digits as its factorization.

61606747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15748.

The product of its (nonzero) digits is 42336, while the sum is 37.

The square root of 61606747 is about 7848.9965600706. The cubic root of 61606747 is about 394.9505829329.

The spelling of 61606747 in words is "sixty-one million, six hundred six thousand, seven hundred forty-seven".