61606787 has 6 divisors (see below), whose sum is σ = 67716684. Its totient is φ = 56006060.

The previous prime is 61606777. The next prime is 61606819. The reversal of 61606787 is 78760616.

It is not a de Polignac number, because 61606787 - 2¹² = 61602691 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 5 ways as a sum of consecutive naturals, for example, 254453 + ... + 254694.

It is an arithmetic number, because the mean of its divisors is an integer number (11286114).

Almost surely, 2^61606787 is an apocalyptic number.

61606787 is a deficient number, since it is larger than the sum of its proper divisors (6109897).

61606787 is a wasteful number, since it uses less digits than its factorization.

61606787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509169 (or 509158 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 61606787 is about 7848.9991081666. Note that the first 3 decimals coincide. The cubic root of 61606787 is about 394.9506684106.

The spelling of 61606787 in words is "sixty-one million, six hundred six thousand, seven hundred eighty-seven".