84637061 has 2 divisors, whose sum is σ = 84637062. Its totient is φ = 84637060.

The previous prime is 84636983. The next prime is 84637087. The reversal of 84637061 is 16073648.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72352036 + 12285025 = 8506^2 + 3505^2 .

It is a cyclic number.

It is not a de Polignac number, because 84637061 - 2¹⁴ = 84620677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84631061) 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, 42318530 + 42318531.

It is an arithmetic number, because the mean of its divisors is an integer number (42318531).

Almost surely, 2^84637061 is an apocalyptic number.

It is an amenable number.

84637061 is a deficient number, since it is larger than the sum of its proper divisors (1).

84637061 is an equidigital number, since it uses as much as digits as its factorization.

84637061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 84637061 is about 9199.8402703525. The cubic root of 84637061 is about 439.0562779504.

The spelling of 84637061 in words is "eighty-four million, six hundred thirty-seven thousand, sixty-one".