84970651 has 2 divisors, whose sum is σ = 84970652. Its totient is φ = 84970650.

The previous prime is 84970643. The next prime is 84970729. The reversal of 84970651 is 15607948.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84970651 - 2³ = 84970643 is a prime.

It is a super-4 number, since 4×84970651⁴ (a number of 33 digits) contains 4444 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (84970601) 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, 42485325 + 42485326.

It is an arithmetic number, because the mean of its divisors is an integer number (42485326).

Almost surely, 2^84970651 is an apocalyptic number.

84970651 is a deficient number, since it is larger than the sum of its proper divisors (1).

84970651 is an equidigital number, since it uses as much as digits as its factorization.

84970651 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 84970651 is about 9217.9526468734. The cubic root of 84970651 is about 439.6323564672.

The spelling of 84970651 in words is "eighty-four million, nine hundred seventy thousand, six hundred fifty-one".