84607631 has 2 divisors, whose sum is σ = 84607632. Its totient is φ = 84607630.

The previous prime is 84607613. The next prime is 84607637. The reversal of 84607631 is 13670648.

Together with previous prime (84607613) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84607631 is a prime.

It is a super-2 number, since 2×84607631² = 14316902446864322, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 84607591 and 84607600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84607637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42303815 + 42303816.

It is an arithmetic number, because the mean of its divisors is an integer number (42303816).

Almost surely, 2^84607631 is an apocalyptic number.

84607631 is a deficient number, since it is larger than the sum of its proper divisors (1).

84607631 is an equidigital number, since it uses as much as digits as its factorization.

84607631 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 84607631 is about 9198.2406469933. The cubic root of 84607631 is about 439.0053824991.

The spelling of 84607631 in words is "eighty-four million, six hundred seven thousand, six hundred thirty-one".