84487537 has 2 divisors, whose sum is σ = 84487538. Its totient is φ = 84487536.

The previous prime is 84487531. The next prime is 84487567. The reversal of 84487537 is 73578448.

It is the 3753-rd star number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58232161 + 26255376 = 7631^2 + 5124^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84487537 is a prime.

It is not a weakly prime, because it can be changed into another prime (84487531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42243768 + 42243769.

It is an arithmetic number, because the mean of its divisors is an integer number (42243769).

Almost surely, 2^84487537 is an apocalyptic number.

It is an amenable number.

84487537 is a deficient number, since it is larger than the sum of its proper divisors (1).

84487537 is an equidigital number, since it uses as much as digits as its factorization.

84487537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 752640, while the sum is 46.

The square root of 84487537 is about 9191.7102325955. The cubic root of 84487537 is about 438.7975727292.

The spelling of 84487537 in words is "eighty-four million, four hundred eighty-seven thousand, five hundred thirty-seven".