85146649 has 4 divisors (see below), whose sum is σ = 97310464. Its totient is φ = 72982836.

The previous prime is 85146647. The next prime is 85146661. The reversal of 85146649 is 94664158.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 85146649 - 2¹ = 85146647 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85146647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6081897 + ... + 6081910.

It is an arithmetic number, because the mean of its divisors is an integer number (24327616).

Almost surely, 2^85146649 is an apocalyptic number.

It is an amenable number.

85146649 is a deficient number, since it is larger than the sum of its proper divisors (12163815).

85146649 is a wasteful number, since it uses less digits than its factorization.

85146649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12163814.

The product of its digits is 207360, while the sum is 43.

The square root of 85146649 is about 9227.4941885650. The cubic root of 85146649 is about 439.9356810253.

The spelling of 85146649 in words is "eighty-five million, one hundred forty-six thousand, six hundred forty-nine".