85346621 has 2 divisors, whose sum is σ = 85346622. Its totient is φ = 85346620.

The previous prime is 85346617. The next prime is 85346633. The reversal of 85346621 is 12664358.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84842521 + 504100 = 9211^2 + 710^2 .

It is a cyclic number.

It is not a de Polignac number, because 85346621 - 2² = 85346617 is a prime.

It is a super-2 number, since 2×85346621² = 14568091432235282, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85346641) 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, 42673310 + 42673311.

It is an arithmetic number, because the mean of its divisors is an integer number (42673311).

Almost surely, 2^85346621 is an apocalyptic number.

It is an amenable number.

85346621 is a deficient number, since it is larger than the sum of its proper divisors (1).

85346621 is an equidigital number, since it uses as much as digits as its factorization.

85346621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 35.

The square root of 85346621 is about 9238.3234950937. The cubic root of 85346621 is about 440.2798168482.

It can be divided in two parts, 853 and 46621, that added together give a palindrome (47474).

The spelling of 85346621 in words is "eighty-five million, three hundred forty-six thousand, six hundred twenty-one".