487640357 has 2 divisors, whose sum is σ = 487640358. Its totient is φ = 487640356.

The previous prime is 487640327. The next prime is 487640383. The reversal of 487640357 is 753046784.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 448126561 + 39513796 = 21169^2 + 6286^2 .

It is a cyclic number.

It is not a de Polignac number, because 487640357 - 2²⁶ = 420531493 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 (487640317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 243820178 + 243820179.

It is an arithmetic number, because the mean of its divisors is an integer number (243820179).

Almost surely, 2^487640357 is an apocalyptic number.

It is an amenable number.

487640357 is a deficient number, since it is larger than the sum of its proper divisors (1).

487640357 is an equidigital number, since it uses as much as digits as its factorization.

487640357 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 564480, while the sum is 44.

The square root of 487640357 is about 22082.5803972271. The cubic root of 487640357 is about 787.1059828520.

The spelling of 487640357 in words is "four hundred eighty-seven million, six hundred forty thousand, three hundred fifty-seven".