61440787 has 2 divisors, whose sum is σ = 61440788. Its totient is φ = 61440786.

The previous prime is 61440767. The next prime is 61440817. The reversal of 61440787 is 78704416.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61440787 - 2¹¹ = 61438739 is a prime.

It is not a weakly prime, because it can be changed into another prime (61440767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30720393 + 30720394.

It is an arithmetic number, because the mean of its divisors is an integer number (30720394).

Almost surely, 2^61440787 is an apocalyptic number.

61440787 is a deficient number, since it is larger than the sum of its proper divisors (1).

61440787 is an equidigital number, since it uses as much as digits as its factorization.

61440787 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37632, while the sum is 37.

The square root of 61440787 is about 7838.4173785274. The cubic root of 61440787 is about 394.5956167024.

The spelling of 61440787 in words is "sixty-one million, four hundred forty thousand, seven hundred eighty-seven".