61440767 has 2 divisors, whose sum is σ = 61440768. Its totient is φ = 61440766.

The previous prime is 61440761. The next prime is 61440787. The reversal of 61440767 is 76704416.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61440767 - 2¹⁰ = 61439743 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61440761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30720383 + 30720384.

It is an arithmetic number, because the mean of its divisors is an integer number (30720384).

Almost surely, 2^61440767 is an apocalyptic number.

61440767 is a deficient number, since it is larger than the sum of its proper divisors (1).

61440767 is an equidigital number, since it uses as much as digits as its factorization.

61440767 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 61440767 is about 7838.4161027595. The cubic root of 61440767 is about 394.5955738866.

The spelling of 61440767 in words is "sixty-one million, four hundred forty thousand, seven hundred sixty-seven".