61845787 has 2 divisors, whose sum is σ = 61845788. Its totient is φ = 61845786.

The previous prime is 61845743. The next prime is 61845803. The reversal of 61845787 is 78754816.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61845787 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (61845727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30922893 + 30922894.

It is an arithmetic number, because the mean of its divisors is an integer number (30922894).

Almost surely, 2^61845787 is an apocalyptic number.

61845787 is a deficient number, since it is larger than the sum of its proper divisors (1).

61845787 is an equidigital number, since it uses as much as digits as its factorization.

61845787 is an evil number, because the sum of its binary digits is even.

The product of its digits is 376320, while the sum is 46.

The square root of 61845787 is about 7864.2092418755. The cubic root of 61845787 is about 395.4607388774.

The spelling of 61845787 in words is "sixty-one million, eight hundred forty-five thousand, seven hundred eighty-seven".