961506487 has 2 divisors, whose sum is σ = 961506488. Its totient is φ = 961506486.

The previous prime is 961506449. The next prime is 961506527. The reversal of 961506487 is 784605169.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-961506487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (961506787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 480753243 + 480753244.

It is an arithmetic number, because the mean of its divisors is an integer number (480753244).

Almost surely, 2^961506487 is an apocalyptic number.

961506487 is a deficient number, since it is larger than the sum of its proper divisors (1).

961506487 is an equidigital number, since it uses as much as digits as its factorization.

961506487 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 961506487 is about 31008.1680690750. The cubic root of 961506487 is about 987.0005762173. Note that the first 3 decimals are identical.

The spelling of 961506487 in words is "nine hundred sixty-one million, five hundred six thousand, four hundred eighty-seven".